9.65% is the change from 508 to 557
Calculation steps:
[( 557 - 508 ) ÷ 508] x 100 = 9.65%
Formula
Percentage change = [(557 - 508) / 508] x 100
Subtract the new number by the original number
557 - 508 = 49
49 ÷ 508 = 0.09645669291338582
0.09645669291338582 x 100 = 9.65%