-86.59% is the change from 820 to 110
Calculation steps:
[( 110 - 820 ) ÷ 820] x 100 = -86.59%
Formula
Percentage change = [(110 - 820) / 820] x 100
Subtract the new number by the original number
110 - 820 = -710
-710 ÷ 820 = -0.8658536585365854
-0.8658536585365854 x 100 = -86.59%