10% off orders of over 300 cookies. That's a popular discount.
It's your business, what do you want to offer? What are you comfortable with? Every business is different with discounts (or lack thereof.)
As we worked to diversify our customer base (didn't want to be 100% wedding catering ... wanted to move into more corporate caterings), we quickly discovered that corporate customers dont' really care about price as much as brides do. No quibbling, no arguing, not much negotiation. Any negotiation was more along the lines of "what do I have to cut out to meet the amount of money I was given to spend?" compared to a bride's negotiation of "how much will you knock off of the price because I can't afford that much but STILL want all of this stuff?"
You don't really "need" a discount to get in the door with a corporation. Part of it is the psychology of the person ordering the food for the meeting isnt' spending THEIR money .... they're spending the company's money.
As far as discounts that I've given: Corporate client who had a standing order for 300 drop cookies PER DAY ..... over 1500 cookies a week. Now, THEY got a discounted price. 
Dealing with corporate clients is MUCH easier than dealing with brides and moms!
Quote by @%username% on %date%
%body%