-51.68% is the change from 656 to 317
Calculation steps:
[( 317 - 656 ) ÷ 656] x 100 = -51.68%
Formula
Percentage change = [(317 - 656) / 656] x 100
Subtract the new number by the original number
317 - 656 = -339
-339 ÷ 656 = -0.5167682926829268
-0.5167682926829268 x 100 = -51.68%