-48.09% is the change from 813 to 422
Calculation steps:
[( 422 - 813 ) ÷ 813] x 100 = -48.09%
Formula
Percentage change = [(422 - 813) / 813] x 100
Subtract the new number by the original number
422 - 813 = -391
-391 ÷ 813 = -0.48093480934809346
-0.48093480934809346 x 100 = -48.09%