Change from previous year

[d4rren]

Hi guys,

I am relatively new to Power Bi, and I am trying to work out the change between previous year for a dataset with years from 2017 to 2041

ASGSCode SexKey AgeGroupKey ERPYear Number 

125011473	3	100	2017	7923.5626292973
125011473	3	100	2018	8675.12833908559
125011473	3	100	2019	9869.29416907326
125011473	3	100	2020	11288.4220074681
125011473	3	100	2021	11780.4204141863
125011473	3	100	2022	12344.0993552951
125011473	3	100	2023	12739.5261897384
125011473	3	100	2024	13056.1681337709
125011473	3	100	2025	13607.7674308966
125011473	3	100	2026	14187.0875408086
125011473	3	100	2027	14730.8783805058
125011473	3	100	2028	15283.5474685934
125011473	3	100	2029	15827.4857965463
125011473	3	100	2030	16402.0931198222
125011473	3	100	2031	16971.9095157816
125011473	3	100	2032	17559.8887122825
125011473	3	100	2033	18122.5555377869
125011473	3	100	2034	18691.4759445159
125011473	3	100	2035	19265.3329322402
125011473	3	100	2036	19850.5697318996
125011473	3	100	2037	20448.4386043441
125011473	3	100	2038	21032.7118328804
125011473	3	100	2039	21547.1260050428
125011473	3	100	2040	22057.0523590882
125011473	3	100	2041	22565.0054992267

I have tried changing my year column 'ERPYear' to a date format, and attempted PREVIOUSYEAR, and SAMPLEPERIODLASTYEAR but I cant seem to get anything to work!

Help would be greatly appreciated - thanks!

[amitchandak]

@d4rren 

Try this with a separate year table

diff from last year
calculate(sum(Table[Number ]),filter(Year[Year]=max(Year[Year]))) -
calculate(sum(Table[Number ]),filter(Year[Year]=max(Year[Year])-1))
or
divide(calculate(sum(Table[Number ]),filter(Year[Year]=max(Year[Year]))),
calculate(sum(Table[Number ]),filter(Year[Year]=max(Year[Year])-1)) )

Or try these with dates and date calendar

YTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(('Date'[Date]),"12/31"))
This Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD((ENDOFYEAR('Date'[Date])),"12/31"))

Last YTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(dateadd('Date'[Date],-1,Year),"12/31"))
Last YTD complete Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(ENDOFYEAR(dateadd('Date'[Date],-1,Year)),"12/31"))
Last to last YTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(dateadd('Date'[Date],-2,Year),"12/31"))

Year behind Sales = CALCULATE(SUM(Sales[Sales Amount]),dateadd('Date'[Date],-1,Year))

To get the best of the time intelligence function. Make sure you have a date calendar and it has been marked as the date in model view. Also, join it with the date column of your fact/s. Refer :
https://radacad.com/creating-calendar-table-in-power-bi-using-dax-functions
https://www.archerpoint.com/blog/Posts/creating-date-table-power-bi
https://www.sqlbi.com/articles/creating-a-simple-date-table-in-dax/

[d4rren]

Thanks @amitchandak I will try this solultion, and accept if I can get it to work

thank you!

[Mariusz · Accepted solution]

Hi @d4rren 

You can create a Column as below.

Column = 
VAR __previousYear = 'Table'[ERPYear] - 1
VAR __previousYearNumber = 
CALCULATE(
    SUM( 'Table'[Number] ),
    ALLEXCEPT( 'Table', 'Table'[ASGSCode] ),
    'Table'[ERPYear] = __previousYear
)
RETURN 
IF( NOT ISBLANK( __previousYearNumber ), 'Table'[Number] - __previousYearNumber )

Best Regards,
Mariusz

If this post helps, then please consider Accepting it as the solution.

Please feel free to connect with me.
LinkedIn

[d4rren]

@Mariusz this is exactly what I was after - so many ways of doing things in Power Bi!