Month-to-Month Change With Multiple Values

[Jean_LucGUE]

Hi all - i am trying to display month-to-month percentage for Multiple values (A, B, C) stored in the same colunm. 

Month	IdAttribute	Attribute	Value
June	1	A	200
June	2	B	100
June	3	C	200
July	1	A	50
July	2	B	25
July	3	C	500
August	1	A	30
August	2	B	250
August	3	C	115

Or 

	A	B	C
June	200	100	200
July	50	25	500
August	30	250	115

The value of B obtained in July is the result of the evolution of the value of A in June.
I would like to perform a Month/Month percentage calculation of B versus A and C versus B.
Simply: B (July)/A(June) = __% or C (July)/B(June) = __%

Do you have any tips (DAX measures) that could help me with this calculation?

Thanks in adavance.

[Vera_33 · Accepted solution]

@Jean_LucGUE 

Here is one way, .pbix file attached

[Hoangechip910 · Accepted solution]

Hi

you need a common Date table, to use  PREVIOUSMONTH

total =SUM (value)

value_percent =

   var a = SELECTEDVAUE (attribute)

return SWITCH (a,

                        "A", blank(),
                        "B", total / CALCULATE (total, REMOVEFILTER (attribute), attribute = "A", PREVIOUSMONTH (Date)),
                        "C", total / CALCULATE (total, REMOVEFILTER (attribute), attribute = "B", PREVIOUSMONTH (Date)),

                        blank() )

Creata Matrix with month and attribute like you show, and add "value_percent' as value

[Jean_LucGUE]

Hello @Vera_33 , thank you very much for your answer.
However my main difficulty is that I would like to have a measure that works no matter which attribute is chosen, not only for B/A.
That is to say, a measure capable of producing the following result:

	A	B	C
July		B/A	C/B

[Vera_33 · Accepted solution]

@Jean_LucGUE 

Here is one way, .pbix file attached