37.64% is the change from 449 to 618
Calculation steps:
[( 618 - 449 ) ÷ 449] x 100 = 37.64%
Formula
Percentage change = [(618 - 449) / 449] x 100
Subtract the new number by the original number
618 - 449 = 169
169 ÷ 449 = 0.37639198218262804
0.37639198218262804 x 100 = 37.64%