3.9% is the change from 538 to 559
Calculation steps:
[( 559 - 538 ) ÷ 538] x 100 = 3.9%
Formula
Percentage change = [(559 - 538) / 538] x 100
Subtract the new number by the original number
559 - 538 = 21
21 ÷ 538 = 0.03903345724907063
0.03903345724907063 x 100 = 3.9%