-20.57% is the change from 632 to 502
Calculation steps:
[( 502 - 632 ) ÷ 632] x 100 = -20.57%
Formula
Percentage change = [(502 - 632) / 632] x 100
Subtract the new number by the original number
502 - 632 = -130
-130 ÷ 632 = -0.20569620253164558
-0.20569620253164558 x 100 = -20.57%