Perez Corporation reported the following operating results for two consecutive years: Required a. Compute the percentage changes in Perez 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).) PEREZ CORPORATION Income Statements 2018 2017 Percentage Change % Sales Cost of goods sold Gross margin Operating expenses Income before taxes Income taxes Net income (loss) $ 1,296,000 $ 1,002,000 797,040 601,200 498,960 400,800 303,500 197,000 195,460 203,800 61,200 52,200 $ 134,260 $ 151,600 %