-30.11% is the change from 857 to 599
Calculation steps:
[( 599 - 857 ) ÷ 857] x 100 = -30.11%
Formula
Percentage change = [(599 - 857) / 857] x 100
Subtract the new number by the original number
599 - 857 = -258
-258 ÷ 857 = -0.30105017502917153
-0.30105017502917153 x 100 = -30.11%