-38.04% is the change from 857 to 531
Calculation steps:
[( 531 - 857 ) ÷ 857] x 100 = -38.04%
Formula
Percentage change = [(531 - 857) / 857] x 100
Subtract the new number by the original number
531 - 857 = -326
-326 ÷ 857 = -0.38039673278879815
-0.38039673278879815 x 100 = -38.04%