What is the value of the revenue in 2018 as a percentage of the revenue in 2019?
{"Fiscal Year -- (In thousands, except percentages)": {"2019": 2019.0, "2018": 2018.0}, "Fiscal Year -- Revenue": {"2019": 892665.0, "2018": 788495.0}, "Fiscal Year -- Operating income": {"2019": 267304.0, "2018": 235719.0}, "Fiscal Year -- Operating income as a % of revenue": {"2019": 29.9, "2018": 29.9}}
revenue_2018 = df["Fiscal Year -- Revenue"]["2018"]
revenue_2019 = df["Fiscal Year -- Revenue"]["2019"]
answer = (revenue_2018 / revenue_2019) * 100.0