Monthly trend line- Diff between the first month value selected by date filter and last month value

[PoojaG]

Hello,

I am trying to calculate the difference between the first value selected and last value in the trend line. I was able to achieve that for daily trend. In the picture below. the metric Positive Sentiment Increased by 11% (83% - 72%). Similarly, I would like to do for weekly trend (picture attached below), the metric should display (81%-77% = 4%) and for monthly trend (picture attached below), it should display (82%-79%=3%).

the formula used for daily trend is: 

difference % Positive = 
var startdate = [Start date]
var start_pct=
CALCULATE([% Positive],
FILTER(ALL('Date'[Time Period]),'Date'[Time Period]=startdate))
var enddate = [End date]
var end_pct=
CALCULATE([% Positive],
FILTER(ALL('Date'[Time Period]),'Date'[Time Period]=enddate))
return ABS(end_pct - start_pct)

Daily trendMonthly trendWeekly trend

[v-lid-msft]

Hi @PoojaG ,

How about the result after you follow the suggestions mentioned in my original post?Could you please provide more details about it If it doesn't meet your requirement?

Best regards,

[v-lid-msft · Accepted solution]

Hi @PoojaG ,

We can try to use the following measure to get Monthly  Diff  percentage:

Monthly difference % Positive =
VAR startdate =
    YEAR ( [Start date] ) * 100
        + MONTH ( [Start date] )
VAR start_pct =
    CALCULATE (
        [% Positive],
        FILTER (
            ALL ( 'Date'[Time Period] ),
            YEAR ( [Time Period] ) * 100
                + MONTH ( [Time Period] ) = startdate
        )
    )
VAR enddate =
    YEAR ( [End date] ) * 100
        + MONTH ( [End date] )
VAR end_pct =
    CALCULATE (
        [% Positive],
        FILTER (
            ALL ( 'Date'[Time Period] ),
            YEAR ( [Time Period] ) * 100
                + MONTH ( [Time Period] ) = enddate
        )
    )
RETURN
    ABS ( end_pct - start_pct )

Best regards,