455% is the change from 100 to 555
Calculation steps:
[( 555 - 100 ) ÷ 100] x 100 = 455%
Formula
Percentage change = [(555 - 100) / 100] x 100
Subtract the new number by the original number
555 - 100 = 455
455 ÷ 100 = 4.55
4.55 x 100 = 455%
Example