96.93% is the change from 391 to 770
Calculation steps:
[( 770 - 391 ) ÷ 391] x 100 = 96.93%
Formula
Percentage change = [(770 - 391) / 391] x 100
Subtract the new number by the original number
770 - 391 = 379
379 ÷ 391 = 0.969309462915601
0.969309462915601 x 100 = 96.93%