-87.29% is the change from 850 to 108
Calculation steps:
[( 108 - 850 ) ÷ 850] x 100 = -87.29%
Formula
Percentage change = [(108 - 850) / 850] x 100
Subtract the new number by the original number
108 - 850 = -742
-742 ÷ 850 = -0.8729411764705882
-0.8729411764705882 x 100 = -87.29%