What was the change in the total between 2018 and 2019?
{"Restructuring -- Employee separation costs": {"2019": 65.3, "2018": 1.2, "2017": 39.1}, "Restructuring -- Gain on sale of assets": {"2019": "\u2014", "2018": -4.4, "2017": "\u2014"}, "Restructuring -- Impairment charges": {"2019": 3.6, "2018": "\u2014", "2017": 12.6}, "Restructuring -- Contract exit costs": {"2019": -4.7, "2018": 0.7, "2017": 44.1}, "Restructuring -- Other": {"2019": -0.3, "2018": "\u2014", "2017": 2.8}, "Restructuring -- Legal contingencies": {"2019": -30.2, "2018": "\u2014", "2017": "\u2014"}, "Restructuring -- Non-restructuring contract exit costs and other": {"2019": "\u2014", "2018": 20.0, "2017": "\u2014"}, "Restructuring -- Total": {"2019": 33.7, "2018": 17.5, "2017": 98.6}}
restructuring_total_2019 = df["Restructuring -- Total"]["2019"]
restructuring_total_2018 = df["Restructuring -- Total"]["2018"]
answer = ( restructuring_total_2019 - restructuring_total_2018 ) / restructuring_total_2018 * 100.0