64.79% is the change from 409 to 674
Calculation steps:
[( 674 - 409 ) ÷ 409] x 100 = 64.79%
Formula
Percentage change = [(674 - 409) / 409] x 100
Subtract the new number by the original number
674 - 409 = 265
265 ÷ 409 = 0.6479217603911981
0.6479217603911981 x 100 = 64.79%