81.29% is the change from 449 to 814
Calculation steps:
[( 814 - 449 ) ÷ 449] x 100 = 81.29%
Formula
Percentage change = [(814 - 449) / 449] x 100
Subtract the new number by the original number
814 - 449 = 365
365 ÷ 449 = 0.8129175946547884
0.8129175946547884 x 100 = 81.29%