8.16% is the change from 515 to 557
Calculation steps:
[( 557 - 515 ) ÷ 515] x 100 = 8.16%
Formula
Percentage change = [(557 - 515) / 515] x 100
Subtract the new number by the original number
557 - 515 = 42
42 ÷ 515 = 0.08155339805825243
0.08155339805825243 x 100 = 8.16%