All,
I have this equation
=SUM(IF(ISNUMBER(B4:B200),IF(MONTH(B4:B200)=MONTH(R3),--((C4:C200))))
B is a list of dates
R3 is a drop down of months
C4 is data or numbers
What I need to do is for February, I need to sum feb then sum Jan and then I need to do this math (What I want = ((Feb+Jan)-Jan)...