82.46% is the change from 399 to 728
Calculation steps:
[( 728 - 399 ) ÷ 399] x 100 = 82.46%
Formula
Percentage change = [(728 - 399) / 399] x 100
Subtract the new number by the original number
728 - 399 = 329
329 ÷ 399 = 0.8245614035087719
0.8245614035087719 x 100 = 82.46%