345.45% is the change from 11 to 49
Calculation steps:
[( 49 - 11 ) ÷ 11] x 100 = 345.45%
Formula
Percentage change = [(49 - 11) / 11] x 100
Subtract the new number by the original number
49 - 11 = 38
38 ÷ 11 = 3.4545454545454546
3.4545454545454546 x 100 = 345.45%