-96.35% is the change from 631 to 23
Calculation steps:
[( 23 - 631 ) ÷ 631] x 100 = -96.35%
Formula
Percentage change = [(23 - 631) / 631] x 100
Subtract the new number by the original number
23 - 631 = -608
-608 ÷ 631 = -0.9635499207606973
-0.9635499207606973 x 100 = -96.35%