456.36% is the change from 55 to 306
Calculation steps:
[( 306 - 55 ) ÷ 55] x 100 = 456.36%
Formula
Percentage change = [(306 - 55) / 55] x 100
Subtract the new number by the original number
306 - 55 = 251
251 ÷ 55 = 4.5636363636363635
4.5636363636363635 x 100 = 456.36%