672.5% is the change from 80 to 618
Calculation steps:
[( 618 - 80 ) ÷ 80] x 100 = 672.5%
Formula
Percentage change = [(618 - 80) / 80] x 100
Subtract the new number by the original number
618 - 80 = 538
538 ÷ 80 = 6.725
6.725 x 100 = 672.5%
Example