98.98% is the change from 391 to 778
Calculation steps:
[( 778 - 391 ) ÷ 391] x 100 = 98.98%
Formula
Percentage change = [(778 - 391) / 391] x 100
Subtract the new number by the original number
778 - 391 = 387
387 ÷ 391 = 0.989769820971867
0.989769820971867 x 100 = 98.98%