Programming auto suggest highest efficiency by percentage distribution

Question

First of all , I need to write a program which is involving the Efficiency suggestion calculation. I have a few parts with each of its have the percent per piece , and how many piece need to produce (demand).

I am struggling on how to do this distribution so all production can be utilize to nearly 100% for each workstation. If this is possible to do using MSSQL Query , is there any concepts I can use like Rank or dense rank ? If it is not possible to use SQL Query is it possible if I do it in m C# Code-behind to Calculate this ? .

Below is reference picture to describe what I explains.