Income statement Compute six ratos that measure Lansbury Cerporason's abaty to eam profits. The company's comparative income statement follows. The data for 2018 are given as needed II. (Cick the icon to view the comparative income statement.) Did the company's operating performance improve or deteriorate during 2020 ? a. Calculate the gross proft percentage for 2019 and 2020 . Identfy the formula, then calculate the gross profit percentage. (Round the percentages lo teo decimal places, XX..) Prothability ratios a. Gross profit percentage b. Operating income percentage c. Rate of retum on net sales d. Rase of refurn on total assets e. Rate of retum on common stockholders' equity f. Earnings per share of common stock