-90.66% is the change from 878 to 82
Calculation steps:
[( 82 - 878 ) ÷ 878] x 100 = -90.66%
Formula
Percentage change = [(82 - 878) / 878] x 100
Subtract the new number by the original number
82 - 878 = -796
-796 ÷ 878 = -0.9066059225512528
-0.9066059225512528 x 100 = -90.66%