-81.71% is the change from 656 to 120
Calculation steps:
[( 120 - 656 ) ÷ 656] x 100 = -81.71%
Formula
Percentage change = [(120 - 656) / 656] x 100
Subtract the new number by the original number
120 - 656 = -536
-536 ÷ 656 = -0.8170731707317073
-0.8170731707317073 x 100 = -81.71%