7.25% is the change from 538 to 577
Calculation steps:
[( 577 - 538 ) ÷ 538] x 100 = 7.25%
Formula
Percentage change = [(577 - 538) / 538] x 100
Subtract the new number by the original number
577 - 538 = 39
39 ÷ 538 = 0.0724907063197026
0.0724907063197026 x 100 = 7.25%