82.96% is the change from 399 to 730
Calculation steps:
[( 730 - 399 ) ÷ 399] x 100 = 82.96%
Formula
Percentage change = [(730 - 399) / 399] x 100
Subtract the new number by the original number
730 - 399 = 331
331 ÷ 399 = 0.8295739348370927
0.8295739348370927 x 100 = 82.96%