I'm trying to subtract 900 (C21) from the next smallest value. How would I do this? My values are
C8 547
C9 769
C10 855
C11 922
C12 1024
C13-19 blank data fields
So it would be 900-855. I only want it to show up if it gives a positive answer. How would I write this in a formula?
This is what I have so far but obviously I've done something wrong
=C21-(SMALL($C$8:$C$19,1+COUNTIF($C$8:$C$19,SMALL($C$8:$C$19,-1))))
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