488.37% is the change from 86 to 506
Calculation steps:
[( 506 - 86 ) ÷ 86] x 100 = 488.37%
Formula
Percentage change = [(506 - 86) / 86] x 100
Subtract the new number by the original number
506 - 86 = 420
420 ÷ 86 = 4.883720930232558
4.883720930232558 x 100 = 488.37%