-52.55% is the change from 822 to 390
Calculation steps:
[( 390 - 822 ) ÷ 822] x 100 = -52.55%
Formula
Percentage change = [(390 - 822) / 822] x 100
Subtract the new number by the original number
390 - 822 = -432
-432 ÷ 822 = -0.5255474452554745
-0.5255474452554745 x 100 = -52.55%