39.48% is the change from 580 to 809
Calculation steps:
[( 809 - 580 ) ÷ 580] x 100 = 39.48%
Formula
Percentage change = [(809 - 580) / 580] x 100
Subtract the new number by the original number
809 - 580 = 229
229 ÷ 580 = 0.39482758620689656
0.39482758620689656 x 100 = 39.48%