In 1998 one state raised cigarette taxes, with the result that the price of a pack of cigarettes rose from$2.20to$2.80. Demand then fell from52to 47.5 million packs. Use these data to estimate the elasticity of demand for cigarettes. (Hint: Find the percentage change in price and the percentage change in demand and use the formula

E=percentchangeinpricePercentchangeindemand

Round your answer to the nearest percent.

E= _____%