-86.46% is the change from 820 to 111
Calculation steps:
[( 111 - 820 ) ÷ 820] x 100 = -86.46%
Formula
Percentage change = [(111 - 820) / 820] x 100
Subtract the new number by the original number
111 - 820 = -709
-709 ÷ 820 = -0.8646341463414634
-0.8646341463414634 x 100 = -86.46%