Brief Exercise 14-4 Your answer is partially correct. Try again. Selected data (in thousands) from the income statement of Vermillion Inc. are shown below. Using vertical analysis, calculate the percentage of the base amount for each year. (Round answers to 1 decimal place, e.g. 5.2%.) 2018 Percentage 2017 Percentage Amount Amount 1000/ 100% Net sales $1,911 $2,074 Cost of goods sold 1,601 1,688 Gross profit 310 386 Operating expenses 217 210 Income before income tax 176 Income tax expense 35 Profit $74 $141