-49.54% is the change from 656 to 331
Calculation steps:
[( 331 - 656 ) ÷ 656] x 100 = -49.54%
Formula
Percentage change = [(331 - 656) / 656] x 100
Subtract the new number by the original number
331 - 656 = -325
-325 ÷ 656 = -0.4954268292682927
-0.4954268292682927 x 100 = -49.54%