-31.61% is the change from 813 to 556
Calculation steps:
[( 556 - 813 ) ÷ 813] x 100 = -31.61%
Formula
Percentage change = [(556 - 813) / 813] x 100
Subtract the new number by the original number
556 - 813 = -257
-257 ÷ 813 = -0.3161131611316113
-0.3161131611316113 x 100 = -31.61%