-96.38% is the change from 636 to 23
Calculation steps:
[( 23 - 636 ) ÷ 636] x 100 = -96.38%
Formula
Percentage change = [(23 - 636) / 636] x 100
Subtract the new number by the original number
23 - 636 = -613
-613 ÷ 636 = -0.9638364779874213
-0.9638364779874213 x 100 = -96.38%