-81.1% is the change from 656 to 124
Calculation steps:
[( 124 - 656 ) ÷ 656] x 100 = -81.1%
Formula
Percentage change = [(124 - 656) / 656] x 100
Subtract the new number by the original number
124 - 656 = -532
-532 ÷ 656 = -0.8109756097560976
-0.8109756097560976 x 100 = -81.1%