-86.95% is the change from 820 to 107
Calculation steps:
[( 107 - 820 ) ÷ 820] x 100 = -86.95%
Formula
Percentage change = [(107 - 820) / 820] x 100
Subtract the new number by the original number
107 - 820 = -713
-713 ÷ 820 = -0.8695121951219512
-0.8695121951219512 x 100 = -86.95%