-90.17% is the change from 875 to 86
Calculation steps:
[( 86 - 875 ) ÷ 875] x 100 = -90.17%
Formula
Percentage change = [(86 - 875) / 875] x 100
Subtract the new number by the original number
86 - 875 = -789
-789 ÷ 875 = -0.9017142857142857
-0.9017142857142857 x 100 = -90.17%