12900% is the change from 6 to 780
Calculation steps:
[( 780 - 6 ) ÷ 6] x 100 = 12900%
Formula
Percentage change = [(780 - 6) / 6] x 100
Subtract the new number by the original number
780 - 6 = 774
774 ÷ 6 = 129
129 x 100 = 12900%
Example