708.75% is the change from 80 to 647
Calculation steps:
[( 647 - 80 ) ÷ 80] x 100 = 708.75%
Formula
Percentage change = [(647 - 80) / 80] x 100
Subtract the new number by the original number
647 - 80 = 567
567 ÷ 80 = 7.0875
7.0875 x 100 = 708.75%
Example