Tracking if Retirement is done

I have created a custom Doctype called: Cash Requisition, in this Doctype after the Request is Approved, Purchase Invoice can be created . Now I want to create a feature that’s is like in Purchase Order where I can see if a request is Retired(created Purchase Invoice, there has to be tracked as in the PO where we see % billed and % received now I want if its retired (Purchase Invoice is created) it is seen on the form as in the screen shot below . Any idea how this can be implemented please.


Select your field type as “Percent.”