At work yesterday, someone asked if this Excel formula was possible. I have not been able to figure out how to do this one. It may not even be possible. In the attached file cell, C9 should calculate how many days they are behind or a head of a schedule for that model number. The answer is -5.5 days behind. The days marked with a zero do not count as a schedule day.
Any help or suggestions would be appreciated
Thank You,