76.47% is the change from 391 to 690
Calculation steps:
[( 690 - 391 ) ÷ 391] x 100 = 76.47%
Formula
Percentage change = [(690 - 391) / 391] x 100
Subtract the new number by the original number
690 - 391 = 299
299 ÷ 391 = 0.7647058823529411
0.7647058823529411 x 100 = 76.47%