10.74% is the change from 503 to 557
Calculation steps:
[( 557 - 503 ) ÷ 503] x 100 = 10.74%
Formula
Percentage change = [(557 - 503) / 503] x 100
Subtract the new number by the original number
557 - 503 = 54
54 ÷ 503 = 0.1073558648111332
0.1073558648111332 x 100 = 10.74%