-49.51% is the change from 822 to 415
Calculation steps:
[( 415 - 822 ) ÷ 822] x 100 = -49.51%
Formula
Percentage change = [(415 - 822) / 822] x 100
Subtract the new number by the original number
415 - 822 = -407
-407 ÷ 822 = -0.4951338199513382
-0.4951338199513382 x 100 = -49.51%