ABC analysis

hello together, 

I am currently trying to map an ABC analysis via Power bi.
I've already read a few posts here about it, but I'm not really getting anywhere.
I would like to classify the articles according to stock entries/consumption.
In my table, each row represents a stock entry with the quantity.

Using a table, I now sum up the consumption over the selected period for each product. 

Now i would like to cumulate the percentage of the booking quantity (%SG:l_menge) and assign the articles according to their cumulated value as A, B or C articles.

I would like to arrange the allocation according to the following grid: 

I hope you can help me.

Thank you very much.

Many greetings
Tobias