49.01% is the change from 302 to 450
Calculation steps:
[( 450 - 302 ) ÷ 302] x 100 = 49.01%
Formula
Percentage change = [(450 - 302) / 302] x 100
Subtract the new number by the original number
450 - 302 = 148
148 ÷ 302 = 0.4900662251655629
0.4900662251655629 x 100 = 49.01%