20.04% is the change from 449 to 539
Calculation steps:
[( 539 - 449 ) ÷ 449] x 100 = 20.04%
Formula
Percentage change = [(539 - 449) / 449] x 100
Subtract the new number by the original number
539 - 449 = 90
90 ÷ 449 = 0.20044543429844097
0.20044543429844097 x 100 = 20.04%