-50.46% is the change from 656 to 325
Calculation steps:
[( 325 - 656 ) ÷ 656] x 100 = -50.46%
Formula
Percentage change = [(325 - 656) / 656] x 100
Subtract the new number by the original number
325 - 656 = -331
-331 ÷ 656 = -0.5045731707317073
-0.5045731707317073 x 100 = -50.46%