-38.69% is the change from 822 to 504
Calculation steps:
[( 504 - 822 ) ÷ 822] x 100 = -38.69%
Formula
Percentage change = [(504 - 822) / 822] x 100
Subtract the new number by the original number
504 - 822 = -318
-318 ÷ 822 = -0.38686131386861317
-0.38686131386861317 x 100 = -38.69%