518.75% is the change from 80 to 495
Calculation steps:
[( 495 - 80 ) ÷ 80] x 100 = 518.75%
Formula
Percentage change = [(495 - 80) / 80] x 100
Subtract the new number by the original number
495 - 80 = 415
415 ÷ 80 = 5.1875
5.1875 x 100 = 518.75%
Example