-39.33% is the change from 656 to 398
Calculation steps:
[( 398 - 656 ) ÷ 656] x 100 = -39.33%
Formula
Percentage change = [(398 - 656) / 656] x 100
Subtract the new number by the original number
398 - 656 = -258
-258 ÷ 656 = -0.3932926829268293
-0.3932926829268293 x 100 = -39.33%