6.15% is the change from 488 to 518
Calculation steps:
[( 518 - 488 ) ÷ 488] x 100 = 6.15%
Formula
Percentage change = [(518 - 488) / 488] x 100
Subtract the new number by the original number
518 - 488 = 30
30 ÷ 488 = 0.06147540983606557
0.06147540983606557 x 100 = 6.15%