7.75% is the change from 503 to 542
Calculation steps:
[( 542 - 503 ) ÷ 503] x 100 = 7.75%
Formula
Percentage change = [(542 - 503) / 503] x 100
Subtract the new number by the original number
542 - 503 = 39
39 ÷ 503 = 0.0775347912524851
0.0775347912524851 x 100 = 7.75%