Gross Profit Percentage Toys"R"Us operates more than 1,500 stores in the United States and abroad. Like most retailers, the managers of Toys "A" Us monitor the company's gross margin percentage. The following information is from the company's income statement (in millions): For the Year Ended February 1, 2003 February 2, 2002 February 3, 2001 Sales Cost of sales $11,305 7,799 $11,019 7,604 $11,332 7,815 Compute the gross profit percentage for each of the 3 years. Comment on the changes in gross profit percentage.