421.25% is the change from 80 to 417
Calculation steps:
[( 417 - 80 ) ÷ 80] x 100 = 421.25%
Formula
Percentage change = [(417 - 80) / 80] x 100
Subtract the new number by the original number
417 - 80 = 337
337 ÷ 80 = 4.2125
4.2125 x 100 = 421.25%
Example