Gibson Corporation reported the following operating results for two consecutive years: Required a. Compute the percentage changes in Gibson Corporation's income statement components between the two years. (Negative amounts should be indicated by a minus sign. Round your answers to 1 decimal place. (i.e., .234 should be entered as 23.4).) GIBSON CORPORATION Income Statements Year 3 Year 2 Percentage Change Sales $ 1,299,000 $ 1,004,500 29.0 % Cost of goods sold 798,885 602,700 Gross margin 500,115 401,800 Operating expenses 304,500 199,000 Income before taxes 195,615 202,800 Income taxes 61,700 52,200 Net income (loss) $ 133,915 $ 150,600 %