Power query percent of category total by date

[JML5525]

Hello, I am in need of assistance. I have a table that I would like to calculate the percent of a category total by date in power query. The table is structured similar to the following:

I would like to have another column for the percentage of total by category and date. Category being building. For example, the first row column would be calculated as 100 (units on 10/1/2023 for machine 1 building 1) /300 (total units made in building 1 on 10/1/2023) The result would be .33. The second row would be  200(units on 10/1/2023 for machine 2 building 1)/300 (total units made in building 1 on 10/1/2023)resulting in .66. Can anyone help? I am having trouble adding up all the units in the building per day and then dividing the units made by machine per units in the building each day.  Thank you. 

[watkinnc · Accepted solution]

After turning the units into numbers, you can group by date, and sum the units, also, choosing the all rows aggregation. Then expand the table column, after which you can just do the row math.

--Nate

[JML5525]

Thank you this worked perfect!