455.56% is the change from 9 to 50
Calculation steps:
[( 50 - 9 ) ÷ 9] x 100 = 455.56%
Formula
Percentage change = [(50 - 9) / 9] x 100
Subtract the new number by the original number
50 - 9 = 41
41 ÷ 9 = 4.555555555555555
4.555555555555555 x 100 = 455.56%