117.65% is the change from 391 to 851
Calculation steps:
[( 851 - 391 ) ÷ 391] x 100 = 117.65%
Formula
Percentage change = [(851 - 391) / 391] x 100
Subtract the new number by the original number
851 - 391 = 460
460 ÷ 391 = 1.1764705882352942
1.1764705882352942 x 100 = 117.65%