18.18% is the change from 429 to 507
Calculation steps:
[( 507 - 429 ) ÷ 429] x 100 = 18.18%
Formula
Percentage change = [(507 - 429) / 429] x 100
Subtract the new number by the original number
507 - 429 = 78
78 ÷ 429 = 0.18181818181818182
0.18181818181818182 x 100 = 18.18%