2.52% is the change from 515 to 528
Calculation steps:
[( 528 - 515 ) ÷ 515] x 100 = 2.52%
Formula
Percentage change = [(528 - 515) / 515] x 100
Subtract the new number by the original number
528 - 515 = 13
13 ÷ 515 = 0.02524271844660194
0.02524271844660194 x 100 = 2.52%