-50.49% is the change from 822 to 407
Calculation steps:
[( 407 - 822 ) ÷ 822] x 100 = -50.49%
Formula
Percentage change = [(407 - 822) / 822] x 100
Subtract the new number by the original number
407 - 822 = -415
-415 ÷ 822 = -0.5048661800486618
-0.5048661800486618 x 100 = -50.49%