-52.43% is the change from 822 to 391
Calculation steps:
[( 391 - 822 ) ÷ 822] x 100 = -52.43%
Formula
Percentage change = [(391 - 822) / 822] x 100
Subtract the new number by the original number
391 - 822 = -431
-431 ÷ 822 = -0.524330900243309
-0.524330900243309 x 100 = -52.43%