775% is the change from 80 to 700
Calculation steps:
[( 700 - 80 ) ÷ 80] x 100 = 775%
Formula
Percentage change = [(700 - 80) / 80] x 100
Subtract the new number by the original number
700 - 80 = 620
620 ÷ 80 = 7.75
7.75 x 100 = 775%
Example