82.86% is the change from 391 to 715
Calculation steps:
[( 715 - 391 ) ÷ 391] x 100 = 82.86%
Formula
Percentage change = [(715 - 391) / 391] x 100
Subtract the new number by the original number
715 - 391 = 324
324 ÷ 391 = 0.8286445012787724
0.8286445012787724 x 100 = 82.86%