56.79% is the change from 449 to 704
Calculation steps:
[( 704 - 449 ) ÷ 449] x 100 = 56.79%
Formula
Percentage change = [(704 - 449) / 449] x 100
Subtract the new number by the original number
704 - 449 = 255
255 ÷ 449 = 0.5679287305122495
0.5679287305122495 x 100 = 56.79%