-31.04% is the change from 857 to 591
Calculation steps:
[( 591 - 857 ) ÷ 857] x 100 = -31.04%
Formula
Percentage change = [(591 - 857) / 857] x 100
Subtract the new number by the original number
591 - 857 = -266
-266 ÷ 857 = -0.3103850641773629
-0.3103850641773629 x 100 = -31.04%