Campbell Corporation reported the following operating results for two consecutive years: Required a. Compute the percentage changes in Campbell Corporation's income statement components between the two years. (Negative amounts should be indicated by a minus sign. Round your percentage answers to 1 decimal place. (i.e., 0.234 should be entered as 23.4).) CAMPBELL CORPORATION Income Statements Year 3 Year 2 Percentage Change 30.01% Sales Cost of goods sold Gross margin Operating expenses Income before taxes $ 1,299,000 $ 1,001,500 798,885 600,900 500,115 400,600 301,000 199,500 199,115 201,100 61,400 52,600 $ 137,715 $ 148,500 Income taxes Net income (loss) %