-87.4% is the change from 857 to 108
Calculation steps:
[( 108 - 857 ) ÷ 857] x 100 = -87.4%
Formula
Percentage change = [(108 - 857) / 857] x 100
Subtract the new number by the original number
108 - 857 = -749
-749 ÷ 857 = -0.8739789964994166
-0.8739789964994166 x 100 = -87.4%