74.94% is the change from 391 to 684
Calculation steps:
[( 684 - 391 ) ÷ 391] x 100 = 74.94%
Formula
Percentage change = [(684 - 391) / 391] x 100
Subtract the new number by the original number
684 - 391 = 293
293 ÷ 391 = 0.7493606138107417
0.7493606138107417 x 100 = 74.94%