-88.33% is the change from 857 to 100
Calculation steps:
[( 100 - 857 ) ÷ 857] x 100 = -88.33%
Formula
Percentage change = [(100 - 857) / 857] x 100
Subtract the new number by the original number
100 - 857 = -757
-757 ÷ 857 = -0.8833138856476079
-0.8833138856476079 x 100 = -88.33%