86.7% is the change from 391 to 730
Calculation steps:
[( 730 - 391 ) ÷ 391] x 100 = 86.7%
Formula
Percentage change = [(730 - 391) / 391] x 100
Subtract the new number by the original number
730 - 391 = 339
339 ÷ 391 = 0.8670076726342711
0.8670076726342711 x 100 = 86.7%