-22.56% is the change from 656 to 508
Calculation steps:
[( 508 - 656 ) ÷ 656] x 100 = -22.56%
Formula
Percentage change = [(508 - 656) / 656] x 100
Subtract the new number by the original number
508 - 656 = -148
-148 ÷ 656 = -0.22560975609756098
-0.22560975609756098 x 100 = -22.56%