680% is the change from 100 to 780
Calculation steps:
[( 780 - 100 ) ÷ 100] x 100 = 680%
Formula
Percentage change = [(780 - 100) / 100] x 100
Subtract the new number by the original number
780 - 100 = 680
680 ÷ 100 = 6.8
6.8 x 100 = 680%
Example