55.17% is the change from 580 to 900
Calculation steps:
[( 900 - 580 ) ÷ 580] x 100 = 55.17%
Formula
Percentage change = [(900 - 580) / 580] x 100
Subtract the new number by the original number
900 - 580 = 320
320 ÷ 580 = 0.5517241379310345
0.5517241379310345 x 100 = 55.17%