What was the difference in the percent variance between Software Solutions and Data and Analytics?
{"Software Solutions": {"2019": 123.9, "2018": 112.9, "$": 11.0, "%": 10.0}, "Data and Analytics": {"2019": 15.9, "2018": 14.1, "$": 1.8, "%": 13.0}, "Corporate and Other(1)": {"2019": 96.4, "2018": 90.0, "$": 6.4, "%": 7.0}, "Total": {"2019": 236.2, "2018": 217.0, "$": 19.2, "%": 9.0}}
data_and_analytics_percent = df["Data and Analytics"]["%"]
software_solutions_percent = df["Software Solutions"]["%"]
answer = data_and_analytics_percent - software_solutions_percent