Clustered column chart - make tooltip use filters?

Hi,

I have a clustered column chart. Here I want to display a percentage of tasks completed within a time frame as a YTD and Previous month. It looks like the below. The percentage is calculated from either a 1 (=the task is completed within the timeframe) or a 0 (=the task is completed outside the designated timeframe)

I have the "task" column as a tooltip. However it shows both with the entire amount of tasks for the year. Why?

My measures looks like the below.

YTD =

VAR OnTime = COUNTROWS(FILTER('TaskTable', 'TaskTable'[IS_OK]=1))

VAR Blanks = COUNTBLANK('TaskTable'[IS_OK])

VAR OffTime = CALCULATE(COUNTROWS(FILTER('TaskTable', 'TaskTable'[IS_OK]=0))-Blanks)

Return

DIVIDE(

        OnTime, OffTime+OnTime)+0

 

 

This Month =

CALCULATE(

    [YTD],

    DATESMTD(Calendar[CalendarKey])

)

 

 

Previous Month =

IF(    

    CALCULATE(    

        [This Month],    

        DATEADD(Calendar[CalendarKey], -1, Month)    

    ) = 0,    

    0,    

    CALCULATE(    

        [This Month],    

        DATEADD(Calendar[CalendarKey], -1, Month)    

    ) + 0    

)    

 

It makes no change whether I togle "keep all filters" on or off