454.55% is the change from 55 to 305
Calculation steps:
[( 305 - 55 ) ÷ 55] x 100 = 454.55%
Formula
Percentage change = [(305 - 55) / 55] x 100
Subtract the new number by the original number
305 - 55 = 250
250 ÷ 55 = 4.545454545454546
4.545454545454546 x 100 = 454.55%