44.69% is the change from 311 to 450
Calculation steps:
[( 450 - 311 ) ÷ 311] x 100 = 44.69%
Formula
Percentage change = [(450 - 311) / 311] x 100
Subtract the new number by the original number
450 - 311 = 139
139 ÷ 311 = 0.44694533762057875
0.44694533762057875 x 100 = 44.69%