44.84% is the change from 310 to 449
Calculation steps:
[( 449 - 310 ) ÷ 310] x 100 = 44.84%
Formula
Percentage change = [(449 - 310) / 310] x 100
Subtract the new number by the original number
449 - 310 = 139
139 ÷ 310 = 0.4483870967741935
0.4483870967741935 x 100 = 44.84%