740% is the change from 80 to 672
Calculation steps:
[( 672 - 80 ) ÷ 80] x 100 = 740%
Formula
Percentage change = [(672 - 80) / 80] x 100
Subtract the new number by the original number
672 - 80 = 592
592 ÷ 80 = 7.4
7.4 x 100 = 740%
Example