66.41% is the change from 390 to 649
Calculation steps:
[( 649 - 390 ) ÷ 390] x 100 = 66.41%
Formula
Percentage change = [(649 - 390) / 390] x 100
Subtract the new number by the original number
649 - 390 = 259
259 ÷ 390 = 0.6641025641025641
0.6641025641025641 x 100 = 66.41%