Mariner Corporation reported the following on its comparative income statement: in millions Revenue Cost of sales 2017 15,834 S5,812 2016 15,600 $5,415 2015 $15,000 $4,500 Perform a horizontal analysis of revenues and gross profit both in dollar amounts and in percentages-for 2017 and 2016. (Round your answers to two decimal places. Use a minus sign or parentheses to represent a decrease in amount or percentage.) Mariner Corporation Comparative Income Statement For The Years Ended December 31, 2017 and 2016 Increasel(Decrease) (amounts in millions) 2016 $15,834 S 15,600 S 15,000 2017 2016 2017 2015 Change Percentage Change Percentage Revenue Cost of Sales Gross Profit 5,812 5,415 4,500