-99.51% is the change from 822 to 4
Calculation steps:
[( 4 - 822 ) ÷ 822] x 100 = -99.51%
Formula
Percentage change = [(4 - 822) / 822] x 100
Subtract the new number by the original number
4 - 822 = -818
-818 ÷ 822 = -0.9951338199513382
-0.9951338199513382 x 100 = -99.51%