Issue finding amount of days it will take for the quantity to reach at least 95% of total

[Anonymous]

This is in the context of a KPI, so 95% means that I need to at least get 95% of my boxes to my customer in 8 days. If I don't, I want to see how many more days it would take to reach that KPI.

There are two parts to this issue:

1) I am trying to create a measure that indicates how many days from the Days column (calculated column) it will take to reach 95% of Quantity of Boxes delivered. I am having issues with even making a measure with a running total or running percentage because I don't use actual dates. 

2) I need to take that amount of days and see how many days over it is from my deadline of 8 days. (I am pretty sure how to do this, but thought that I would ask anyway.)

The sample is in this sample table, but obviously this is based in PBI, and the Days column is a calculated column that calculates time it took for a certain quantity of boxes to come in. The days it takes and the quantity of boxes on any given day always changes. The deadline does not.

Days	Quantity of Boxes
1	2
3	3
4	2
5	1
7	1
10	4
11	3
12	1
14	1

[Anonymous]

@Greg_Deckler Would this be an instance for a loop? I just read a previous article you published regarding this topic and thought it might be applicable! Still looking for an answer!

[amitchandak]

@Anonymous , I think percentile should help

refr these examples for percentile
https://blog.enterprisedna.co/implementing-80-20-logic-in-your-power-bi-analysis/
https://forum.enterprisedna.co/t/testing-the-pareto-principle-80-20-rule-in-power-bi-w-dax/459

[Anonymous]

I had to alter the formula, but with the RANKX, it will not break the ties...

TP =

    VAR TargetQuantityBoxes = SUM(BoxDelivery[Quantity of Boxes])*0.95

    RETURN

    CALCULATE([Sum of Quantity of Boxes],

        FILTER( VALUES(BoxDelivery[Days]),

            RANKX( VALUES(BoxDelivery[Days]), [Sum of Quantity of Boxes] && [New Index], , DESC, Dense) <=  TargetQuantityBoxes))

[Sum of Quantity of Boxes] is a measure that is literally the same thing as the Quantity of Boxes column because the Quantity of Boxes column is also a calculated column that I sum. (I have to sum it.)

I even created an Index Column with a New Index measure where I summed the Index Column and added 1 for the [New Index] measure, but there still wasn't any differientation.