-90.39% is the change from 822 to 79
Calculation steps:
[( 79 - 822 ) ÷ 822] x 100 = -90.39%
Formula
Percentage change = [(79 - 822) / 822] x 100
Subtract the new number by the original number
79 - 822 = -743
-743 ÷ 822 = -0.9038929440389294
-0.9038929440389294 x 100 = -90.39%