-62.41% is the change from 822 to 309
Calculation steps:
[( 309 - 822 ) ÷ 822] x 100 = -62.41%
Formula
Percentage change = [(309 - 822) / 822] x 100
Subtract the new number by the original number
309 - 822 = -513
-513 ÷ 822 = -0.6240875912408759
-0.6240875912408759 x 100 = -62.41%