71.05% is the change from 449 to 768
Calculation steps:
[( 768 - 449 ) ÷ 449] x 100 = 71.05%
Formula
Percentage change = [(768 - 449) / 449] x 100
Subtract the new number by the original number
768 - 449 = 319
319 ÷ 449 = 0.7104677060133631
0.7104677060133631 x 100 = 71.05%