-29.64% is the change from 857 to 603
Calculation steps:
[( 603 - 857 ) ÷ 857] x 100 = -29.64%
Formula
Percentage change = [(603 - 857) / 857] x 100
Subtract the new number by the original number
603 - 857 = -254
-254 ÷ 857 = -0.29638273045507585
-0.29638273045507585 x 100 = -29.64%