-19.09% is the change from 812 to 657
Calculation steps:
[( 657 - 812 ) ÷ 812] x 100 = -19.09%
Formula
Percentage change = [(657 - 812) / 812] x 100
Subtract the new number by the original number
657 - 812 = -155
-155 ÷ 812 = -0.19088669950738915
-0.19088669950738915 x 100 = -19.09%