-42.59% is the change from 857 to 492
Calculation steps:
[( 492 - 857 ) ÷ 857] x 100 = -42.59%
Formula
Percentage change = [(492 - 857) / 857] x 100
Subtract the new number by the original number
492 - 857 = -365
-365 ÷ 857 = -0.425904317386231
-0.425904317386231 x 100 = -42.59%