7.74% is the change from 517 to 557
Calculation steps:
[( 557 - 517 ) ÷ 517] x 100 = 7.74%
Formula
Percentage change = [(557 - 517) / 517] x 100
Subtract the new number by the original number
557 - 517 = 40
40 ÷ 517 = 0.07736943907156674
0.07736943907156674 x 100 = 7.74%