Open question: what is an appropriate total management work %?

Entirely, which a realistic goal percentage of rough sales for a company is, if it regards its total management as work budget? As it refers to the restaurant and maintenance scene industries. The company, which I work on for, straight begins to grow and as we I does, is in a critical role, which must help to supervise these numbers with the police which is adjusted in my opinion at present to low in our system in the name of the low costs. The problem is of, where we came too, where we are now, the income difference are very largely, like the necessity at the larger talent. Thought?