2.79% is the change from 538 to 553
Calculation steps:
[( 553 - 538 ) ÷ 538] x 100 = 2.79%
Formula
Percentage change = [(553 - 538) / 538] x 100
Subtract the new number by the original number
553 - 538 = 15
15 ÷ 538 = 0.027881040892193308
0.027881040892193308 x 100 = 2.79%