465.56% is the change from 90 to 509
Calculation steps:
[( 509 - 90 ) ÷ 90] x 100 = 465.56%
Formula
Percentage change = [(509 - 90) / 90] x 100
Subtract the new number by the original number
509 - 90 = 419
419 ÷ 90 = 4.655555555555556
4.655555555555556 x 100 = 465.56%