7.74% is the change from 478 to 515
Calculation steps:
[( 515 - 478 ) ÷ 478] x 100 = 7.74%
Formula
Percentage change = [(515 - 478) / 478] x 100
Subtract the new number by the original number
515 - 478 = 37
37 ÷ 478 = 0.07740585774058577
0.07740585774058577 x 100 = 7.74%