105.12% is the change from 449 to 921
Calculation steps:
[( 921 - 449 ) ÷ 449] x 100 = 105.12%
Formula
Percentage change = [(921 - 449) / 449] x 100
Subtract the new number by the original number
921 - 449 = 472
472 ÷ 449 = 1.0512249443207127
1.0512249443207127 x 100 = 105.12%