-19.31% is the change from 813 to 656
Calculation steps:
[( 656 - 813 ) ÷ 813] x 100 = -19.31%
Formula
Percentage change = [(656 - 813) / 813] x 100
Subtract the new number by the original number
656 - 813 = -157
-157 ÷ 813 = -0.1931119311193112
-0.1931119311193112 x 100 = -19.31%