Why is percentage of total in a month differs from percentage of total in a day?

[NewUser1989]

Hi, a new user of Power BI here.

I am confused as to why the percentage of total based on month differs from percentage of total based on days. I used a date table for this. As you can see on the upper Table, the %total is equal to the Percentage Difference. However, it does not match when I base it on month as shown in the lower table. 

The formulas I used are as follows: 

Current Percentage of Total =

DIVIDE(

    [Submitted Running Total],

    CALCULATE(

        [Submission Count],

        ALL(Query2)

    ),

    0

)*100

Previous Percentage of Total =

CALCULATE(

    [Current Percentage of Total],

    FILTER(

        ALL('Calendar 2'[Date]),  

        'Calendar 2'[Date] = MAX('Calendar 2'[Date]) - 1

    )

)

and 

Percentage Difference =

[Current Percentage of Total] - [Previous Percentage of Total]

Please help. 

Thanks a lot!

[lbendlin]

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