756.25% is the change from 80 to 685
Calculation steps:
[( 685 - 80 ) ÷ 80] x 100 = 756.25%
Formula
Percentage change = [(685 - 80) / 80] x 100
Subtract the new number by the original number
685 - 80 = 605
605 ÷ 80 = 7.5625
7.5625 x 100 = 756.25%
Example