3.46% is the change from 491 to 508
Calculation steps:
[( 508 - 491 ) ÷ 491] x 100 = 3.46%
Formula
Percentage change = [(508 - 491) / 491] x 100
Subtract the new number by the original number
508 - 491 = 17
17 ÷ 491 = 0.034623217922606926
0.034623217922606926 x 100 = 3.46%