505.56% is the change from 90 to 545
Calculation steps:
[( 545 - 90 ) ÷ 90] x 100 = 505.56%
Formula
Percentage change = [(545 - 90) / 90] x 100
Subtract the new number by the original number
545 - 90 = 455
455 ÷ 90 = 5.055555555555555
5.055555555555555 x 100 = 505.56%