780% is the change from 80 to 704
Calculation steps:
[( 704 - 80 ) ÷ 80] x 100 = 780%
Formula
Percentage change = [(704 - 80) / 80] x 100
Subtract the new number by the original number
704 - 80 = 624
624 ÷ 80 = 7.8
7.8 x 100 = 780%
Example