65.8 grams of chlorine gas is pumped into a flask containing a piece of sodium metal with a mass of 53.2 grams. A violent reaction occurs resulting in the production of white crystals of sodium chloride which fills the flask. Calculate the theoretical yield of sodium chloride produced by this violent reaction. Upon completion of this reaction in a laboratory, 86.4 grams of sodium chloride was produced. Calculate the percent yield for this reaction.