In CHEM 140 lab students synthesis aspirin from salicylic acid and acetic anhydride. Based on the starting mass of each reactant and the reaction stoichiometry, a student calculates a theoretical yield of 4.579g of aspirin. At the end of the experiment he finds that the mass of aspirin actually produced was 2.998g. What is the percent yield for his experiment? Round your answer to 2 decimal places. Your answer will be in %. Do not include units on your answer. Report your answer in decimal notation. Do not use scientific notation