35.6% is the change from 309 to 419
Calculation steps:
[( 419 - 309 ) ÷ 309] x 100 = 35.6%
Formula
Percentage change = [(419 - 309) / 309] x 100
Subtract the new number by the original number
419 - 309 = 110
110 ÷ 309 = 0.3559870550161812
0.3559870550161812 x 100 = 35.6%