Measure for percentage change using date fields

[Chase234]

Hi,

Super new to Power BI but I have a table for capturing when an objective was created with a date/time column called 'createdOn'

I want to calculate how many have been created per month so I have a measure for 'Total Objectives' as: 
COUNTA('reviews Objective'[CreatedOn])

Which when put on a table I can get the following:

What I would now like to do is to add another column with the percentage change from the previous month.
I have looked and googled and all queries seem to be 'Sums' rather than 'Counts' and I'm wondering if what I am trying to do is possible.

TIA

[v-cgao-msft · Accepted solution]

Hi @Chase234 ,

Please try like:

the percentage change = 
VAR _pre = CALCULATE([Total Objectives],PREVIOUSMONTH('Calendar'[Date]))
VAR _change = DIVIDE([Total Objectives]-_pre,_pre)
RETURN
_change

Best Regards,
Gao
Community Support Team

If there is any post helps, then please consider Accept it as the solution  to help the other members find it more quickly. If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

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[Chase234]

Sorry, I have been out of action for a few weeks but thank you this is exactly the equation I needed to get what get my desired results!

[amitchandak]

@Chase234 , you should always use date table and time intelligence 

Time Intelligence, DATESMTD, DATESQTD, DATESYTD, Week On Week, Week Till Date, Custom Period on Period,
Custom Period till date: https://youtu.be/aU2aKbnHuWs&t=145s

Power BI — Year on Year with or Without Time Intelligence
https://medium.com/@amitchandak.1978/power-bi-ytd-questions-time-intelligence-1-5-e3174b39f38a
https://www.youtube.com/watch?v=km41KfM_0uA
Power BI — Qtr on Qtr with or Without Time Intelligence
https://medium.com/@amitchandak.1978/power-bi-qtd-questions-time-intelligence-2-5-d842063da839
https://www.youtube.com/watch?v=8-TlVx7P0A0
Power BI — Month on Month with or Without Time Intelligence
https://medium.com/@amitchandak.1978/power-bi-mtd-questions-time-intelligence-3-5-64b0b4a4090e
https://www.youtube.com/watch?v=6LUBbvcxtKA
Power BI — Week on Week and WTD
https://medium.com/@amitchandak.1978/power-bi-wtd-questions-time-intelligence-4-5-98c30fab69d3
https://community.powerbi.com/t5/Community-Blog/Week-Is-Not-So-Weak-WTD-Last-WTD-and-This-Week-vs-La...
https://www.youtube.com/watch?v=pnAesWxYgJ8
Day Intelligence - Last day, last non continous day
https://medium.com/@amitchandak.1978/power-bi-day-intelligence-questions-time-intelligence-5-5-5c324...

[Chase234]

Sorry I have been out for a few weeks but your links have been really helpful mixed with the DAX from the above solution as within your first video I was realised I was missing a Calendar/Date table to join up to my other tables.