-38.56% is the change from 822 to 505
Calculation steps:
[( 505 - 822 ) ÷ 822] x 100 = -38.56%
Formula
Percentage change = [(505 - 822) / 822] x 100
Subtract the new number by the original number
505 - 822 = -317
-317 ÷ 822 = -0.38564476885644766
-0.38564476885644766 x 100 = -38.56%