-52.98% is the change from 857 to 403
Calculation steps:
[( 403 - 857 ) ÷ 857] x 100 = -52.98%
Formula
Percentage change = [(403 - 857) / 857] x 100
Subtract the new number by the original number
403 - 857 = -454
-454 ÷ 857 = -0.5297549591598599
-0.5297549591598599 x 100 = -52.98%