817.5% is the change from 80 to 734
Calculation steps:
[( 734 - 80 ) ÷ 80] x 100 = 817.5%
Formula
Percentage change = [(734 - 80) / 80] x 100
Subtract the new number by the original number
734 - 80 = 654
654 ÷ 80 = 8.175
8.175 x 100 = 817.5%
Example