28.51% is the change from 449 to 577
Calculation steps:
[( 577 - 449 ) ÷ 449] x 100 = 28.51%
Formula
Percentage change = [(577 - 449) / 449] x 100
Subtract the new number by the original number
577 - 449 = 128
128 ÷ 449 = 0.28507795100222716
0.28507795100222716 x 100 = 28.51%