Health experts have tried to get many restaurants to serve smaller portions. Now, apparently, some customers are calling for this too. The restaurant industry trade magazine QSR reported last month that 57 percent of more than 4,000 people surveyed believed restaurants serve portions that are too large;23 percent had no opinion;20 percent disagreed. But a closer look at the survey indicates that many Americans who can’t afford fine dining still prefer large portions. Seventy percent of those earning at least $150,000 per year prefer smaller portions ;but only 45 percent of those earning less than $ 25,000 want smaller. What is the average percentage of customers preferring smaller portions according to the report by QSR