What was the percentage change in the total contractual obligations between the periods of 2020 and 2021-2022?
{"Debt(1)": {"Total": 1554.8, "2020": 80.0, "2021-2022": 184.1, "2023-2024": 1290.7}, "Interest on debt (2)": {"Total": 171.5, "2020": 54.7, "2021-2022": 102.0, "2023-2024": 14.8}, "Data processing and maintenance commitments": {"Total": 103.4, "2020": 44.5, "2021-2022": 46.5, "2023-2024": 12.4}, "Operating lease payments": {"Total": 27.5, "2020": 12.6, "2021-2022": 11.5, "2023-2024": 3.4}, "Other(3)": {"Total": 3.9, "2020": 1.2, "2021-2022": 2.4, "2023-2024": 0.3}, "Total": {"Total": 1861.1, "2020": 193.0, "2021-2022": 346.5, "2023-2024": 1321.6}}
total_20212022 = df["Total"]["2021-2022"]
total_2020 = df["Total"]["2020"]
answer = ( total_20212022 - total_2020 ) / total_2020 * 100.0