What was the percentage change in total deductions between 2018 and 2019?
{"Gross amount of accumulated depreciation at beginning": {"2019": -5724.7, "2018": -5181.2, "2017": -4548.1}, "Additions during period: -- Depreciation": {"2019": -768.4, "2018": -751.4, "2017": -718.7}, "Additions during period: -- Other": {"2019": "\u2014", "2018": "\u2014", "2017": "\u2014"}, "Additions during period: -- Total additions": {"2019": -768.4, "2018": -751.4, "2017": -718.7}, "Deductions during period: -- Amount of accumulated depreciation for assets sold or disposed": {"2019": 121.4, "2018": 129.3, "2017": 100.7}, "Deductions during period: -- Other (7)": {"2019": -10.5, "2018": 78.6, "2017": -15.1}, "Deductions during period: -- Total deductions": {"2019": 110.9, "2018": 207.9, "2017": 85.6}, "Deductions during period: -- Balance at end": {"2019": -6382.2, "2018": -5724.7, "2017": -5181.2}}
total_deductions_2019 = df["Deductions during period: -- Total deductions"]["2019"]
total_deductions_2018 = df["Deductions during period: -- Total deductions"]["2018"]
answer = (total_deductions_2019 - total_deductions_2018) / total_deductions_2018 * 100.0