-23.45% is the change from 857 to 656
Calculation steps:
[( 656 - 857 ) ÷ 857] x 100 = -23.45%
Formula
Percentage change = [(656 - 857) / 857] x 100
Subtract the new number by the original number
656 - 857 = -201
-201 ÷ 857 = -0.23453908984830804
-0.23453908984830804 x 100 = -23.45%