Need help with Running total in %

Anonymous , You need date, with this month format this will not work

Sales RT =
VAR MaxDate = Date(2023,5,31)
RETURN
CALCULATE (
SUM('Forecast Table'[count]),
filter(All('Goal Table'), 'Goal Table'[Date]> date(2020,5,1) && 'Goal Table'[Date] <= MaxDate && 'Goal Table'[Date] <= Max('Goal Table'[Date])
))

with the current month format, you can get a date like this. In case you do not have one

Date = "01 " & [Month Year] //Change data type to date

Hi Anonymous 

You could create a new table like your provided ,only two column(date,Count of process Name),then use the following dax to create a measure:

Sales RT =

VAR mindate =

    DATE ( 2020, 01, 01 )

VAR maxday =

    DATE ( 2023, 10, 15 )

VAR last =

    CALCULATE (

        SUM ( 'Forecast Table'[Count of Process Name]),

        FILTER (

            ALL ( 'Forecast Table' ),

               'Forecast Table'[Date format]<= MAX ( 'Forecast Table'[Date format] )

                && 'Forecast Table'[Date format] <= maxday

                && 'Forecast Table'[Date format]  >= mindate

        )

    )

RETURN

    last

final you will see the below:

Wish  it is helpful for you!

Best Regard

Lucien Wang