2.79% is the change from 501 to 515
Calculation steps:
[( 515 - 501 ) ÷ 501] x 100 = 2.79%
Formula
Percentage change = [(515 - 501) / 501] x 100
Subtract the new number by the original number
515 - 501 = 14
14 ÷ 501 = 0.027944111776447105
0.027944111776447105 x 100 = 2.79%