15.13% is the change from 390 to 449
Calculation steps:
[( 449 - 390 ) ÷ 390] x 100 = 15.13%
Formula
Percentage change = [(449 - 390) / 390] x 100
Subtract the new number by the original number
449 - 390 = 59
59 ÷ 390 = 0.15128205128205127
0.15128205128205127 x 100 = 15.13%