Concord Inc and Riverbed Corporation are Canadian fertilizer companies. The following information has been taken from their financial statements for the fiscal years ended December 31. All figures are in millions of dollars. RIVERBED 2021 2020 2019 Net sales $9,595.8 $5.153.5 $3.440.5 Gross profit 4.848.2 1,855,4 1,019.7 Profit 3,718.2 1.125.7 612.6 CONCORD 2021 2020 2019 Net sales $9,279 $5,292 $4.124 Gross profit 3,551 1,531 1,029 Profit 1,317 418 31 Calculate both companies' gross profit margin and profit margin for the years 2019 through 2021. (Round answers to 1 decimal place, e.g.52.7%.) 2021 2020 2019 RIVERBED Gross profit margin Profit margin % % % % % % 2021 2020 2019 CONCORD Gross profit margin % Profit margin % e Textbook and Media Determine which company had the best performance for profitability in each year. 2021 2020 2019 Gross profit margin Profit margin e Textbook and Media Using horizontal analysis, calculate the percentage change between the following years: 2019 and 2020; 2020 and 2021 for both companies. (Round answers to 1 decimal place, e.g.52.7%.) 2021 2020 RIVERBED Net sales % Gross profit % Profit % 2021 2020 CONCORD Net sales % Gross profit Profit % % Using the information in the horizontal analysis, identify the company that had the most improvement in net sales, gross profit margin and profit margin in 2020 and 2021. 2021 2020 Net sales Gross profit Profit margin