557.5% is the change from 80 to 526
Calculation steps:
[( 526 - 80 ) ÷ 80] x 100 = 557.5%
Formula
Percentage change = [(526 - 80) / 80] x 100
Subtract the new number by the original number
526 - 80 = 446
446 ÷ 80 = 5.575
5.575 x 100 = 557.5%
Example