-86.33% is the change from 878 to 120
Calculation steps:
[( 120 - 878 ) ÷ 878] x 100 = -86.33%
Formula
Percentage change = [(120 - 878) / 878] x 100
Subtract the new number by the original number
120 - 878 = -758
-758 ÷ 878 = -0.8633257403189066
-0.8633257403189066 x 100 = -86.33%