18.26% is the change from 449 to 531
Calculation steps:
[( 531 - 449 ) ÷ 449] x 100 = 18.26%
Formula
Percentage change = [(531 - 449) / 449] x 100
Subtract the new number by the original number
531 - 449 = 82
82 ÷ 449 = 0.18262806236080179
0.18262806236080179 x 100 = 18.26%