17.25% is the change from 429 to 503
Calculation steps:
[( 503 - 429 ) ÷ 429] x 100 = 17.25%
Formula
Percentage change = [(503 - 429) / 429] x 100
Subtract the new number by the original number
503 - 429 = 74
74 ÷ 429 = 0.17249417249417248
0.17249417249417248 x 100 = 17.25%