What was the percentage change in Pensions in 2019 from 2018?
{"Deferred tax assets: -- Pensions": {"2019": 86.9, "2018": 66.8}, "Deferred tax assets: -- Postretirement provisions": {"2019": 35.7, "2018": 33.7}, "Deferred tax assets: -- Net operating loss carryforwards": {"2019": 28.8, "2018": 26.5}, "Deferred tax assets: -- Derivatives and hedging activities": {"2019": 4.1, "2018": "\u2014"}, "Deferred tax assets: -- Other": {"2019": 32.1, "2018": 29.4}, "Deferred tax assets: -- Gross deferred tax assets": {"2019": 187.6, "2018": 156.4}, "Deferred tax assets: -- Valuation allowances": {"2019": -24.6, "2018": -23.9}, "Deferred tax assets: -- Total deferred tax assets": {"2019": 163.0, "2018": 132.5}, "Deferred tax liabilities: -- Depreciation": {"2019": -249.5, "2018": -235.2}, "Deferred tax liabilities: -- Intangible assets": {"2019": -11.3, "2018": -11.9}, "Deferred tax liabilities: -- Inventories": {"2019": -36.1, "2018": -30.5}, "Deferred tax liabilities: -- Derivatives and hedging activities": {"2019": -0.3, "2018": -8.7}, "Deferred tax liabilities: -- Other": {"2019": -4.3, "2018": -3.5}, "Deferred tax liabilities: -- Total deferred tax liabilities": {"2019": -301.5, "2018": -289.8}, "Deferred tax liabilities: -- Deferred tax liabilities, net": {"2019": -138.5, "2018": -157.3}}
pensions_2019 = df["Deferred tax assets: -- Pensions"]["2019"]
pensions_2018 = df["Deferred tax assets: -- Pensions"]["2018"]
answer = ( pensions_2019 - pensions_2018 ) / pensions_2018 * 100.0