22.49% is the change from 449 to 550
Calculation steps:
[( 550 - 449 ) ÷ 449] x 100 = 22.49%
Formula
Percentage change = [(550 - 449) / 449] x 100
Subtract the new number by the original number
550 - 449 = 101
101 ÷ 449 = 0.22494432071269488
0.22494432071269488 x 100 = 22.49%