-15.09% is the change from 656 to 557
Calculation steps:
[( 557 - 656 ) ÷ 656] x 100 = -15.09%
Formula
Percentage change = [(557 - 656) / 656] x 100
Subtract the new number by the original number
557 - 656 = -99
-99 ÷ 656 = -0.15091463414634146
-0.15091463414634146 x 100 = -15.09%