526.25% is the change from 80 to 501
Calculation steps:
[( 501 - 80 ) ÷ 80] x 100 = 526.25%
Formula
Percentage change = [(501 - 80) / 80] x 100
Subtract the new number by the original number
501 - 80 = 421
421 ÷ 80 = 5.2625
5.2625 x 100 = 526.25%
Example