-22.41% is the change from 656 to 509
Calculation steps:
[( 509 - 656 ) ÷ 656] x 100 = -22.41%
Formula
Percentage change = [(509 - 656) / 656] x 100
Subtract the new number by the original number
509 - 656 = -147
-147 ÷ 656 = -0.22408536585365854
-0.22408536585365854 x 100 = -22.41%