77900% is the change from 1 to 780
Calculation steps:
[( 780 - 1 ) ÷ 1] x 100 = 77900%
Formula
Percentage change = [(780 - 1) / 1] x 100
Subtract the new number by the original number
780 - 1 = 779
779 ÷ 1 = 779
779 x 100 = 77900%
Example