18.41% is the change from 429 to 508
Calculation steps:
[( 508 - 429 ) ÷ 429] x 100 = 18.41%
Formula
Percentage change = [(508 - 429) / 429] x 100
Subtract the new number by the original number
508 - 429 = 79
79 ÷ 429 = 0.18414918414918416
0.18414918414918416 x 100 = 18.41%