-87.28% is the change from 857 to 109
Calculation steps:
[( 109 - 857 ) ÷ 857] x 100 = -87.28%
Formula
Percentage change = [(109 - 857) / 857] x 100
Subtract the new number by the original number
109 - 857 = -748
-748 ÷ 857 = -0.8728121353558926
-0.8728121353558926 x 100 = -87.28%