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quired. 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 Change in 2013 2012 Dollars Percentage Sales revenues 99,300 $ 127,524 % Costs of goods sold 61,300 76,514 % Gross profit 38,000 51,010 Selling, general, and Administrative expenses 31,100 31,100 % Interest expense 574 420 Income before income tax expense 6,326 19,490 3,585 6,260 % Income tax expense 13,230 % Net income $ 2,741 $