-38.86% is the change from 857 to 524
Calculation steps:
[( 524 - 857 ) ÷ 857] x 100 = -38.86%
Formula
Percentage change = [(524 - 857) / 857] x 100
Subtract the new number by the original number
524 - 857 = -333
-333 ÷ 857 = -0.3885647607934656
-0.3885647607934656 x 100 = -38.86%