517.5% is the change from 80 to 494
Calculation steps:
[( 494 - 80 ) ÷ 80] x 100 = 517.5%
Formula
Percentage change = [(494 - 80) / 80] x 100
Subtract the new number by the original number
494 - 80 = 414
414 ÷ 80 = 5.175
5.175 x 100 = 517.5%
Example