73.72% is the change from 449 to 780
Calculation steps:
[( 780 - 449 ) ÷ 449] x 100 = 73.72%
Formula
Percentage change = [(780 - 449) / 449] x 100
Subtract the new number by the original number
780 - 449 = 331
331 ÷ 449 = 0.7371937639198218
0.7371937639198218 x 100 = 73.72%