30.74% is the change from 309 to 404
Calculation steps:
[( 404 - 309 ) ÷ 309] x 100 = 30.74%
Formula
Percentage change = [(404 - 309) / 309] x 100
Subtract the new number by the original number
404 - 309 = 95
95 ÷ 309 = 0.3074433656957929
0.3074433656957929 x 100 = 30.74%