(Reuters) -Yum Brands reported a fall in quarterly global same-store sales on Wednesday, hurt by choppy demand for its KFC and Pizza Hut brands from inflation-weary consumers in the United States as well as in overseas markets. Consumers in the United States are increasingly looking for value-oriented meals in the face of sticky inflation, pushing fast food chains to double down on promotions and offers and on revamping their store and order experiences. Shares of Yum Brands slipped 6% in premarket trade after the Pizza Hut parent joined coffee giant Starbucks in recording its first drop in total same-store sales in about three years.