856.25% is the change from 80 to 765
Calculation steps:
[( 765 - 80 ) ÷ 80] x 100 = 856.25%
Formula
Percentage change = [(765 - 80) / 80] x 100
Subtract the new number by the original number
765 - 80 = 685
685 ÷ 80 = 8.5625
8.5625 x 100 = 856.25%
Example