15.06% is the change from 538 to 619
Calculation steps:
[( 619 - 538 ) ÷ 538] x 100 = 15.06%
Formula
Percentage change = [(619 - 538) / 538] x 100
Subtract the new number by the original number
619 - 538 = 81
81 ÷ 538 = 0.15055762081784388
0.15055762081784388 x 100 = 15.06%