4500% is the change from 9 to 414
Calculation steps:
[( 414 - 9 ) ÷ 9] x 100 = 4500%
Formula
Percentage change = [(414 - 9) / 9] x 100
Subtract the new number by the original number
414 - 9 = 405
405 ÷ 9 = 45
45 x 100 = 4500%
Example