12.25% is the change from 449 to 504
Calculation steps:
[( 504 - 449 ) ÷ 449] x 100 = 12.25%
Formula
Percentage change = [(504 - 449) / 449] x 100
Subtract the new number by the original number
504 - 449 = 55
55 ÷ 449 = 0.12249443207126949
0.12249443207126949 x 100 = 12.25%