102.45% is the change from 449 to 909
Calculation steps:
[( 909 - 449 ) ÷ 449] x 100 = 102.45%
Formula
Percentage change = [(909 - 449) / 449] x 100
Subtract the new number by the original number
909 - 449 = 460
460 ÷ 449 = 1.024498886414254
1.024498886414254 x 100 = 102.45%