309.09% is the change from 11 to 45
Calculation steps:
[( 45 - 11 ) ÷ 11] x 100 = 309.09%
Formula
Percentage change = [(45 - 11) / 11] x 100
Subtract the new number by the original number
45 - 11 = 34
34 ÷ 11 = 3.090909090909091
3.090909090909091 x 100 = 309.09%