Find % distribution based on data in lookup table

Hi,

I have 6 items ( Their % of the total is shown in the table)

These items will go in 5 boxes

The items which will go in each box is shown in a lookup table

Based on this lookup table, I need to generate a table which shows % distribution of each item in each box.

I have done the calculations using helper tables and columns , but would like to receive a solution which will avoid usage of helpers.

Sample file attached.