Required: 1-a. Conduct a horizontal analysis by calculating the year-over-year changes in each line item, expressed in dollars and in percentages. (Round your "Percentage" to 1 decimal place. Any decrease in amounts should be indicated with minus sign) COMPUTER TYCOON, INC. Vertical Analysis of Income Statements For the Years Ended December 31 2012 Change in Dollars Percentage $ Sales revenues Costs of goods sold Gross profit Selling, general, and Administrative expenses Interest expense Income before income tax expense Income tax expense Net income 2013 99,300 $ 61,300 38,000 31,100 574 6,326 3,585 2,741 $ 127,524 76,514 51,010 31,100 420 19,490 6,260 13,230 lee $ %