871.25% is the change from 80 to 777
Calculation steps:
[( 777 - 80 ) ÷ 80] x 100 = 871.25%
Formula
Percentage change = [(777 - 80) / 80] x 100
Subtract the new number by the original number
777 - 80 = 697
697 ÷ 80 = 8.7125
8.7125 x 100 = 871.25%
Example