666.25% is the change from 80 to 613
Calculation steps:
[( 613 - 80 ) ÷ 80] x 100 = 666.25%
Formula
Percentage change = [(613 - 80) / 80] x 100
Subtract the new number by the original number
613 - 80 = 533
533 ÷ 80 = 6.6625
6.6625 x 100 = 666.25%
Example