73.15% is the change from 391 to 677
Calculation steps:
[( 677 - 391 ) ÷ 391] x 100 = 73.15%
Formula
Percentage change = [(677 - 391) / 391] x 100
Subtract the new number by the original number
677 - 391 = 286
286 ÷ 391 = 0.731457800511509
0.731457800511509 x 100 = 73.15%