-48.35% is the change from 817 to 422
Calculation steps:
[( 422 - 817 ) ÷ 817] x 100 = -48.35%
Formula
Percentage change = [(422 - 817) / 817] x 100
Subtract the new number by the original number
422 - 817 = -395
-395 ÷ 817 = -0.4834761321909425
-0.4834761321909425 x 100 = -48.35%