-31.2% is the change from 811 to 558
Calculation steps:
[( 558 - 811 ) ÷ 811] x 100 = -31.2%
Formula
Percentage change = [(558 - 811) / 811] x 100
Subtract the new number by the original number
558 - 811 = -253
-253 ÷ 811 = -0.311960542540074
-0.311960542540074 x 100 = -31.2%