44.34% is the change from 309 to 446
Calculation steps:
[( 446 - 309 ) ÷ 309] x 100 = 44.34%
Formula
Percentage change = [(446 - 309) / 309] x 100
Subtract the new number by the original number
446 - 309 = 137
137 ÷ 309 = 0.44336569579288027
0.44336569579288027 x 100 = 44.34%