Don't include parent rows in checkbox complete roll-up percentage
Hello. I'm new to formulas and need help. I'm trying to figure out how to get the total % complete for a column of check boxes. We need to know the % complete by milestone (which we figured out) AND the total % complete. We use parent rows as headers that should not be included in this total. I had a formula that sort of worked, but lost it. This is the formula I used for the milestone tracking:
=ROUND(IF(COUNTIF(DESCENDANTS(), 1) / COUNT(DESCENDANTS()) > 0, COUNTIF(DESCENDANTS(), 1) / COUNT(DESCENDANTS()), 0) * 100, 0) + "%"
How would I write a formula that would not include parent rows?
Thanks in advance!