According to Australian accounting standards, all these calculations are:

EBIT= turnover-cost

Cost = purchase price+labor+other expenses (electricity, materials, etc.). )

EBT = EBIT- interest (if there is a loan, etc. )

Net profit = EBT *( 1- tax rate)

If it refers to the profit forecast when selling the store, directly look at the financial statements and profits and taxes of the previous year.