68.37% is the change from 449 to 756
Calculation steps:
[( 756 - 449 ) ÷ 449] x 100 = 68.37%
Formula
Percentage change = [(756 - 449) / 449] x 100
Subtract the new number by the original number
756 - 449 = 307
307 ÷ 449 = 0.6837416481069042
0.6837416481069042 x 100 = 68.37%