Let's say you have 3 numbers, A, B and C.
A = -105
B = -110
C = -115
You can eyeball those three numbers and see that B is closer to A than
C is, but what's a formula for that? You also have to account for
different signs in the numbers like:
A = 105
B = -101
C = 110
Any clues? I'm stuck and tired of entering this stuff in manually.