[VBA] Filter quantity of the commodity code from total data and minus decesing ?

[mrsunftu]

Please help me about this situtation.
I have much orders which are have some kind of goods is the same. It's on the data_need_find sheet.
The inventory have the total data = data_source sheet.
And the question is, how I could make a macro to minus decesing the quantity of each kind of goods by each order, like this:
data_need_find.png

the data_source:

data_source.png

Thanks you so much.