448.75% is the change from 80 to 439
Calculation steps:
[( 439 - 80 ) ÷ 80] x 100 = 448.75%
Formula
Percentage change = [(439 - 80) / 80] x 100
Subtract the new number by the original number
439 - 80 = 359
359 ÷ 80 = 4.4875
4.4875 x 100 = 448.75%
Example