-23.34% is the change from 857 to 657
Calculation steps:
[( 657 - 857 ) ÷ 857] x 100 = -23.34%
Formula
Percentage change = [(657 - 857) / 857] x 100
Subtract the new number by the original number
657 - 857 = -200
-200 ÷ 857 = -0.23337222870478413
-0.23337222870478413 x 100 = -23.34%