Summing a Subset of Rows as a new column

[MInsight]

Hi,

My Table looks as below.

A subset from the Style column is considered an unusable grading. The intention is to sum up the total of the unusable grading - "Unsound with Butter Grade VALUE - Sinkers", "Oil Nuts Value" and "Unsound with NO VALUE -Mould" and dislpay it in a column for every line. 

That, I will in turn, apply the percentage breakdown(No % column created yet) of the "Units" column to the Unuasbale grading total, to determine a realistic potential distribution of Usable styles and from there multiply it with the rate to provide clients with an Opportunity cost so to speak

Note that I do have filters affecting this view. This view is for one client for the current year only.

I would apprecaite any help or feedback.

Thanks

[lbendlin]

Please provide sanitized sample data that fully covers your issue. I can only help you with meaningful sample data.
Please paste the data into a table in your post or use one of the file services like OneDrive or Google Drive.
https://community.powerbi.com/t5/Community-Blog/How-to-provide-sample-data-in-the-Power-BI-Forum/ba-...

Please show the expected outcome based on the sample data you provided. Screenshots of the expected outcome are ok.

https://community.powerbi.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/1447523