1.38% is the change from 508 to 515
Calculation steps:
[( 515 - 508 ) ÷ 508] x 100 = 1.38%
Formula
Percentage change = [(515 - 508) / 508] x 100
Subtract the new number by the original number
515 - 508 = 7
7 ÷ 508 = 0.013779527559055118
0.013779527559055118 x 100 = 1.38%