24.45% is the change from 409 to 509
Calculation steps:
[( 509 - 409 ) ÷ 409] x 100 = 24.45%
Formula
Percentage change = [(509 - 409) / 409] x 100
Subtract the new number by the original number
509 - 409 = 100
100 ÷ 409 = 0.24449877750611246
0.24449877750611246 x 100 = 24.45%
Example