41.51% is the change from 318 to 450
Calculation steps:
[( 450 - 318 ) ÷ 318] x 100 = 41.51%
Formula
Percentage change = [(450 - 318) / 318] x 100
Subtract the new number by the original number
450 - 318 = 132
132 ÷ 318 = 0.41509433962264153
0.41509433962264153 x 100 = 41.51%