64.16% is the change from 399 to 655
Calculation steps:
[( 655 - 399 ) ÷ 399] x 100 = 64.16%
Formula
Percentage change = [(655 - 399) / 399] x 100
Subtract the new number by the original number
655 - 399 = 256
256 ÷ 399 = 0.6416040100250626
0.6416040100250626 x 100 = 64.16%