You guys are mind-blowing… i spend HOURS trying to work what the best LAYOUT is on my airtables!
Ok, so I have yet another layer of complexity to add here:
I want the progress bar to update according to the amount of tasks completed (already calculated from two other Lookup cells to get the relevant info from TASKS tab)
I have a box already for the numbers of tasks complete   :slightly_smiling_face: 

Can anyone help on how would I go about that?
                
     
                                    
            This was an excellent thread! Thank you for the formulas.
I wanted to comment with a slightly updated version.
I took the progress bar from above and altered it via these items:
- made a version that has a continuous progress bar (no boxes or squares)
 
- made a version that is small for mobile devices
 
Plus, I added a component, to show how many tasks for a project are in the following status. I spaced them out so they always appear on the left, in the middle, or on the right;
- To Do  - shown via this symbol ⎋
 
- Waiting (on someone) -  shown via this symbol ⏎
 
- In Progress - shown via this symbol ➤
 

                
     
                                    
            This was an excellent thread! Thank you for the formulas.
I wanted to comment with a slightly updated version.
I took the progress bar from above and altered it via these items:
- made a version that has a continuous progress bar (no boxes or squares)
 
- made a version that is small for mobile devices
 
Plus, I added a component, to show how many tasks for a project are in the following status. I spaced them out so they always appear on the left, in the middle, or on the right;
- To Do  - shown via this symbol ⎋
 
- Waiting (on someone) -  shown via this symbol ⏎
 
- In Progress - shown via this symbol ➤
 

The graphic comes from these fields
Combination Field
CompletionBar&'\n'&{Status graphic}
CompletionBar field
(this is the same formula from above, but I replaced the square progress indicators with different ones, called Full Width within Apple Emoji keyboard. The full width aspect lets them touch, appearing as if it is a continuous indicator, instead of boxes lined up in a row
IF(
    PercentDone >= 0,
    REPT(
        '▅',
        ROUND( MIN(PercentDone, 1) * 10 )
    )
    &
    REPT(
        '﹏',
        10 - ROUND( MIN(PercentDone, 1) * 10)
    )
    &
    ' '
    &
    INT( MIN(PercentDone, 1) * 100 )
    &
    '%'
)
Status Graphic field
IF({rollupDONE matches percent done}="✔️Confirmed Done","☑️Done",CONCATENATE(
  IF(
    AND({⎋count To Do}>0,{⎋count To Do}<10),
    "⎋"&{⎋count To Do}&"               ",
    IF(
      {⎋count To Do}>=10,
      "⎋"&{⎋count To Do}&"             ","                      ")),
      IF(
        AND({⏎count Waiting}>0,{⏎count Waiting}<10),
        "⏎"&{⏎count Waiting}&"               ",
        IF({⏎count Waiting}>=10,"⏎"&{⏎count Waiting}&"             ",
        "                      ")),
  IF({➤count InProgress},"➤"&{➤count InProgress},BLANK())))
                
     
                                    
            This is an amazing Thread, and thanks for providing such a great formula. I tweaked it a bit to ensure the spacing stays aligned when the Percentage # in front of the Progress bar has 1,2, or 3 digit pad.
So you have this 
 vs 
IF(LEN(INT(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*100
            )&'')=1,INT(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*100
            )& "%-- "&
    REPT(
        '⬛️',
        ROUND(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*10
            )
        )
        &
    REPT(
        '🔲',
        ROUND(
            10-(IF(
               BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal*10),0
            )
        ),IF(LEN(INT(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*100
            )&'')=2,INT(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*100
            )& "%- "&
    REPT(
        '⬛️',
        ROUND(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*10
            )
        )
        &
    REPT(
        '🔲',
        ROUND(
            10-(IF(
               BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal*10),0
            )
        ),IF(LEN(INT(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*100
            )&'')=3,INT(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*100
            )& "% "&
    REPT(
        '⬛️',
        ROUND(
            (IF(
                BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal)*10
            )
        )
        &
    REPT(
        '🔲',
        ROUND(
            10-(IF(
               BarCurrent<=BarGoal,
                BarCurrent,
                BarGoal
                )/BarGoal*10),0
            )
        ))))
If you replace the “-” with a non-breaking space, you can do the same thing without a visible character.
                
     
                                    
            You guys are mind-blowing… i spend HOURS trying to work what the best LAYOUT is on my airtables!
Ok, so I have yet another layer of complexity to add here:
I want the progress bar to update according to the amount of tasks completed (already calculated from two other Lookup cells to get the relevant info from TASKS tab)
I have a box already for the numbers of tasks complete   :slightly_smiling_face: 

Can anyone help on how would I go about that?
I did this by having each task have it’s own progress field, with this formula:
IF({Status}="Done",1,0)
That field would then be hidden, it’s only purpose is the rollup.
Now just roll up that field with this formula:
AVERAGE(values)
…and boom! The total progress of all attached tasks.
You have to AVERAGE instead of SUM when working with percentages.
                
     
                                    
            Airtable update: progress bars for percent fields are now available.
Just wanted to update this thread with this product news about progress bars, but also to say I really love this conversation as an example of the power of formulas in Airtable and the generosity of Airtable users helping each other to problem solve.