I'm using this formula to count scheduling accuracy by workdays. When the
team delivers on the scheduled date, the result is "1", so I've added "-1" at
the end of the formula. I have a bigger problem, which is related. For this
criteria: target date - 09/01/05 and delivery date - 09/03/05 the result is
"-1", but should be "-2".

Any ideas on what's wrong with this formula?

=NETWORKDAYS(IF(COUNT(L15:O15),MAX(L15:O15),P15),P 15)-1