Subtracting Running Total from first available value in a table

[AgataJ]

Good morning,

I am working on such calculations:

I have a column with Hours and Hours Used. For Hours used I need to calculate Running Total, what I have a DAX for it no problem.

My problem starts with calculating a Balance.

I need to subtract Hours Used Running Total always from the first available date for Hours (01/01/2025 – 100 in my example table)

In Excel it would be like Balance = $B$3 – E3, next row $B$3 – E4 etc., but I cannot find a solution how to do this in DAX.

Would appreciate help with this.

Kind regards,

Agata

Date	Hours	Hours used	Hours Used Running Total	Balance
01/01/2025	100	10	10	10
02/01/2025	200	60	70	30
03/01/2025	300	10	80	20
04/01/2025	100	20	100	0
05/01/2025	500	20	120	-20
06/01/2025	300	30	150	-50
07/01/2025	400	40	190	-90
08/01/2025	400	30	210	-110
09/01/2025	200	50	260	-160
10/01/2025	100	10	270	-170

[speedramps]

Thanks @AgataJ 

Your new issue is a bit vague and a new problem that will require a new solution.

Please raise a new ticket rather than append to this one, otherwise uit gets confussing which is which.

If you quote @speedramops then I wil receive an automatic notification.

In you new ticket please provide:-

• input data (as a table not picture). 
• desired output
• step by step description
• use meaningful column names
• keep it simple and omit anything not related to the problem

Take care to use the same column names in the input, output and description.

Use Power Bi terminnology.  If you mean Slicer then say slicer and not Filter.

You will get quicker and better replies if you take the time and effort to ask clear and comprehensive questions with example data.

Thank you

[speedramps]

@AgataJ  please review my solution and either click [accept solution] and the thumbs up button or provide more details, thank you 😀

[Anonymous]

Hi,speedramps ,thanks for your concern about this issue.

Your answer is excellent!
And I would like to share some additional solutions below.
Hello,@AgataJ .I am glad to help you.

After my test, the test data provided by speedramps  is correct. In addition, I noticed that there is an error in the test data provided by you, which may cause misunderstanding

I hope my suggestions give you good ideas, if you have any more questions, please clarify in a follow-up reply.
Best Regards,
Carson Jian

[speedramps · Accepted solution]

Try this

Answer = 

// get first date
var myfirstdate = 
CALCULATE(
    MIN(yourdata[Date]),
    ALl(yourdata)
)

// get hours for first date
var myfirstvalue =
CALCULATE(
SUM(yourdata[Hours]),
ALL(yourdata),
yourdata[Date] <= myfirstdate)

// get date for current row in visual
var mydate = SELECTEDVALUE(yourdata[Date])

// get running total for row
var runningtotal =
CALCULATE(
SUM(yourdata[Hours used]),
ALL(yourdata),
yourdata[Date] <= mydate)

RETURN
// deduct running toral from first value
myfirstvalue - runningtotal

Please click the [accept solution] and thumbs up buttons. Thank you

[AgataJ]

Hi @speedramps ,

My bad, I focused on the project and forgot to asnwer. Your code works well, thanks a million!

I had to filter it to start the calculation from the first date when Cum_Complete is not blank. I did it using this code: 

Answer2 filtered = CALCULATE([Answer 2], 'MRP History'[Complete]<>0). It works properly however still shows the first line when cum_complete is empty, would you know maybe how to show the first line with cum_complete not blank (in the example case it'd be 02-Jan_2025)? I cannot filter it by cum_complete >0 as I would like to see other empty lines , like here:  

Thanks in advance,

Agata