Zachary Corporation reported the following operating results for two consecutive years: Required a. Compute the percentage changes in Zachary 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).) ZACHARY CORPORATION Income Statements Percentage Year 3 Year 2 Change Sales $ 1,295,000 $ 1,002,000 % Cost of goods sold 796,425 601,200 Gross margin 498,575 400,800 Operating expenses 303,500 199,500 Income before taxes 195,075 201,300 Income taxes 61,500 52,800 Net income (loss) $ 133,575 $ 148,500 %