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Frequent Visitor

## Difference between 2 rows using first row fixed

Hello!

I need to calculate the difference between two rows in a matrix table in Power BI, but I need to keep the first row as reference, like this:

EDIT: The first row (Model "A") can be changed by filter, so I need to use always the first row, not the model as reference.

 model price diff explanation A 1499 0 - B 1949 450 EXP.: MODEL B - MODEL A C 1799 300 EXP.: MODEL C - MODEL A D 2699 1200 EXP.: MODEL D - MODEL A

I used a metric to calculate this values:

.AVG_PRICE = CALCULATE(AVERAGE(FORMULARIO_RESPOSTAS[DES_RESPOSTA_QTD]);FORMULARIO_RESPOSTAS[DES_RESPOSTA_QTD] > 0)

Anyone knows how can I get this?

Thanks!
1 ACCEPTED SOLUTION

Accepted Solutions
Community Support Team

## Re: Difference between 2 rows using first row fixed

Hi @gonnelli,

Does that make sense? If so, kindly mark my answer as a solution to close the case.

Regards,
Frank

Community Support Team _ Frank
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
7 REPLIES 7
Frequent Visitor

## Re: Difference between 2 rows using first row fixed

Have you tried using the LOOKUPVALUE function? You can use this to return the value for Model A in whatever column you need to reference.

In your example below, the formula would look something like (I'm using "Table1" as the table where your values are stored in this example):

`diff = CALCULATE(AVERAGE(Table1[price])-LOOKUPVALUE(Table1[price],Table1[model],"A"))`

Put this measure as the diff column in your matrix table visual and you should get the desired results.
Super User

## Re: Difference between 2 rows using first row fixed

Hi,

Do you want to take the difference between the price in the current row and the row with the minumum price?

Highlighted
Community Support Team

## Re: Difference between 2 rows using first row fixed

Hi @gonnelli,

Two ways you can choose.

1. To create a calculated column.

`diffc = Table1[price]-CALCULATE(SUM(Table1[price]),FILTER(ALL(Table1),Table1[model]="A"))`

2. To create a measure.

`diffm = MAX(Table1[price])-CALCULATE(SUM(Table1[price]),FILTER(ALL(Table1),Table1[model]="A"))`

For more details, please check the pbix as attached.

Regards,

Frank

Community Support Team _ Frank
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Frequent Visitor

## Re: Difference between 2 rows using first row fixed

Hello @v-frfei-msft

In my case, I can't use lookupvalues because the first "model" can be changed by filters.

I need to calculate always the difference between the first row with another rows.

Frequent Visitor

## Re: Difference between 2 rows using first row fixed

I need to calculate always the first rows and another rows, but the first rows can be changed by filter.

Community Support Team

## Re: Difference between 2 rows using first row fixed

Hi @gonnelli,

I made an update of the measure.

`diffm = MAX(Table1[price])-CALCULATE(SUM(Table1[price]),FILTER(ALLSELECTED(Table1),Table1[model]=MINX(ALLSELECTED(Table1),Table1[model])))`

For more details, please check the pbix as attached.

Regards,

Frank

Community Support Team _ Frank
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Community Support Team

## Re: Difference between 2 rows using first row fixed

Hi @gonnelli,

Does that make sense? If so, kindly mark my answer as a solution to close the case.

Regards,
Frank

Community Support Team _ Frank
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.