82.71% is the change from 399 to 729
Calculation steps:
[( 729 - 399 ) ÷ 399] x 100 = 82.71%
Formula
Percentage change = [(729 - 399) / 399] x 100
Subtract the new number by the original number
729 - 399 = 330
330 ÷ 399 = 0.8270676691729323
0.8270676691729323 x 100 = 82.71%