running total

Is the value of Ticket allotted per day the same for all the rows in the same day? If so, you can do as follows:

Allotted Running Total :=
VAR CurrentDay = MAX ( Table[Day] )
CALCULATE ( 
    SUMX ( 
        SUMMARIZE ( 
            Table,
            Table[Day],
            Table[Ticket allotted per day]
        ),
        Table[Ticket allotted per day]
    ),
    Table[Day] <= CurrentDay
)

If, on the other hand, the value might be different for the same day, then this code will result in a wrong result (but, at this point, you have a modeling issue).

That said, it would be better to store the "ticket alloted per day" in a table containing one row per day, in that case the solution would be a much better one.