309.09% is the change from 55 to 225
Calculation steps:
[( 225 - 55 ) ÷ 55] x 100 = 309.09%
Formula
Percentage change = [(225 - 55) / 55] x 100
Subtract the new number by the original number
225 - 55 = 170
170 ÷ 55 = 3.090909090909091
3.090909090909091 x 100 = 309.09%