Median Calculation in Table Visualization

Hello All,

I have a table which has iteration and points covered in each iteration as shown below. I need to group the table as shown in figure 2. The second table contains distinct iterations and total points covered in that iteration. I have calculated the median and percent(Divided total points of each iteration by the median calculated) as follows:

Media =
MEDIANX (
    SUMMARIZE ( Data, Data[Iteration] ),
    CALCULATE ( SUM ( Data[Points] ) )
)

Percent =
DIVIDE ( SUM ( Data[Points] ), CALCULATE ( [Media], ALLSELECTED ( Data ) ) )

In my actual table there are many iterations and I need to display the top 6 iterations and get the score for them. The above calculation works if ALL(Data) is used instead of ALLSELECTED(Data). However, in my graph visualization(Custom Column Chart), upon selecting a particular iteration,the value of percent changes to 1 for all iterations. 

Hoping you could help out here.

Thanks,

Prashasti