-28.48% is the change from 811 to 580
Calculation steps:
[( 580 - 811 ) ÷ 811] x 100 = -28.48%
Formula
Percentage change = [(580 - 811) / 811] x 100
Subtract the new number by the original number
580 - 811 = -231
-231 ÷ 811 = -0.2848335388409371
-0.2848335388409371 x 100 = -28.48%