-85.17% is the change from 863 to 128
Calculation steps:
[( 128 - 863 ) ÷ 863] x 100 = -85.17%
Formula
Percentage change = [(128 - 863) / 863] x 100
Subtract the new number by the original number
128 - 863 = -735
-735 ÷ 863 = -0.8516801853997682
-0.8516801853997682 x 100 = -85.17%