-31% is the change from 813 to 561
Calculation steps:
[( 561 - 813 ) ÷ 813] x 100 = -31%
Formula
Percentage change = [(561 - 813) / 813] x 100
Subtract the new number by the original number
561 - 813 = -252
-252 ÷ 813 = -0.30996309963099633
-0.30996309963099633 x 100 = -31%