?_Rasmussen: Coupons as percetage of sales

I am trying to figure out what our percentage of our sales should be discounted or coupons. We probably discount about 30% of our sales right now through coupons and the occasional promotion or event. We are a delivery and pick up place with no dine in. We are also in a mature competitive market, and we are the new guy touting gourmet style “not 5.00” pizza