But more recent sales took a hit after the cyclospora outbreak plunged the company’s most important brand into a food-safety crisis. Sales at Taco Bell have fallen 2% from the end of June through July 27, executives said an earnings call Thursday. Sales from all KFC, Pizza Hut and Taco Bell stores open at least one year grew 3% worldwide. “Taco Bell remains the star of the show,” said Ben Parker, associate consulting director at GlobalData, in a note. To win back customers, Taco Bell last week rolled out those one-day promotion of lettuce-free menu items for $1 each.