2.58% is the change from 581 to 596
Calculation steps:
[( 596 - 581 ) ÷ 581] x 100 = 2.58%
Formula
Percentage change = [(596 - 581) / 581] x 100
Subtract the new number by the original number
596 - 581 = 15
15 ÷ 581 = 0.025817555938037865
0.025817555938037865 x 100 = 2.58%