-85.53% is the change from 857 to 124
Calculation steps:
[( 124 - 857 ) ÷ 857] x 100 = -85.53%
Formula
Percentage change = [(124 - 857) / 857] x 100
Subtract the new number by the original number
124 - 857 = -733
-733 ÷ 857 = -0.8553092182030338
-0.8553092182030338 x 100 = -85.53%