4.1% is the change from 488 to 508
Calculation steps:
[( 508 - 488 ) ÷ 488] x 100 = 4.1%
Formula
Percentage change = [(508 - 488) / 488] x 100
Subtract the new number by the original number
508 - 488 = 20
20 ÷ 488 = 0.040983606557377046
0.040983606557377046 x 100 = 4.1%