34.1% is the change from 305 to 409
Calculation steps:
[( 409 - 305 ) ÷ 305] x 100 = 34.1%
Formula
Percentage change = [(409 - 305) / 305] x 100
Subtract the new number by the original number
409 - 305 = 104
104 ÷ 305 = 0.34098360655737703
0.34098360655737703 x 100 = 34.1%