I just tried WORKDAY_DIFF({Date of Return}, {Date Resolved}) and now it is showing negative days?

I am trying to get the numbers of days difference between a date cell and a formula cell using IF({Return Solved}=1, DATETIME_FORMAT(SET_TIMEZONE(NOW(), ‘New Zealand/Wellington’), ‘D/M/YYYY’)) I am trying to use DATETIME_DIFF({Date of Return}, {Date ...