41.19% is the change from 318 to 449
Calculation steps:
[( 449 - 318 ) ÷ 318] x 100 = 41.19%
Formula
Percentage change = [(449 - 318) / 318] x 100
Subtract the new number by the original number
449 - 318 = 131
131 ÷ 318 = 0.4119496855345912
0.4119496855345912 x 100 = 41.19%