-90.54% is the change from 877 to 83
Calculation steps:
[( 83 - 877 ) ÷ 877] x 100 = -90.54%
Formula
Percentage change = [(83 - 877) / 877] x 100
Subtract the new number by the original number
83 - 877 = -794
-794 ÷ 877 = -0.9053591790193842
-0.9053591790193842 x 100 = -90.54%