-48.03% is the change from 812 to 422
Calculation steps:
[( 422 - 812 ) ÷ 812] x 100 = -48.03%
Formula
Percentage change = [(422 - 812) / 812] x 100
Subtract the new number by the original number
422 - 812 = -390
-390 ÷ 812 = -0.4802955665024631
-0.4802955665024631 x 100 = -48.03%