9.9% is the change from 515 to 566
Calculation steps:
[( 566 - 515 ) ÷ 515] x 100 = 9.9%
Formula
Percentage change = [(566 - 515) / 515] x 100
Subtract the new number by the original number
566 - 515 = 51
51 ÷ 515 = 0.09902912621359224
0.09902912621359224 x 100 = 9.9%