Saved Search to determine the consumption of Raw materials in Finished goods

Hello experts,
I am trying to create a Saved Search in order to determine the consumption of Raw materials in Finished goods.
For example:
Item                         Theoretical Consumption                            Actual Consumption
Inventory Item                  1200                                                          1350

So this particular inventory Item which is used as a BOM Item for products A,B,C was actually consumed in qty of 1350 for all the products in total against the Bill of material requirement of 1200 for a particular period ( Period : Work Orders built in specific time frame)

In that way we can understand the consumption pattern of our Raw Materials, basically our yield, also help us in determining their optimum Lot size for purchasing.