-19.21% is the change from 812 to 656
Calculation steps:
[( 656 - 812 ) ÷ 812] x 100 = -19.21%
Formula
Percentage change = [(656 - 812) / 812] x 100
Subtract the new number by the original number
656 - 812 = -156
-156 ÷ 812 = -0.1921182266009852
-0.1921182266009852 x 100 = -19.21%