4.5% is the change from 556 to 581
Calculation steps:
[( 581 - 556 ) ÷ 556] x 100 = 4.5%
Formula
Percentage change = [(581 - 556) / 556] x 100
Subtract the new number by the original number
581 - 556 = 25
25 ÷ 556 = 0.044964028776978415
0.044964028776978415 x 100 = 4.5%