41.64% is the change from 317 to 449
Calculation steps:
[( 449 - 317 ) ÷ 317] x 100 = 41.64%
Formula
Percentage change = [(449 - 317) / 317] x 100
Subtract the new number by the original number
449 - 317 = 132
132 ÷ 317 = 0.416403785488959
0.416403785488959 x 100 = 41.64%