6.9% is the change from 449 to 480
Calculation steps:
[( 480 - 449 ) ÷ 449] x 100 = 6.9%
Formula
Percentage change = [(480 - 449) / 449] x 100
Subtract the new number by the original number
480 - 449 = 31
31 ÷ 449 = 0.06904231625835189
0.06904231625835189 x 100 = 6.9%