Use Oppong Corporation's financial statements to compute the required ratios below, and indicate whether the change from year to year is favorable or unfavorable. For your analysis, assume that all other things have remained constant. Apply your analysis in very general terms. All values should be accurate to at least two decimal places.

Oppong Corporation Income Statement For Years Ended December 31, 2019, 2018, and 2017 Sales Cost of goods sold Gross margin Operating expenses Income from operations Interest expense Net income Oppong Corporation Balance Sheet December 31, 2019, 2018, and 2017