What was the percentage change in the amount of Property in 2019 from 2018?
{"": {"Year-ended 31 March 2019": "$M", "Year-ended 31 March 2018 Restated See note 2": "$M"}, "Depreciation of property, plant and equipment": {"Year-ended 31 March 2019": 11.8, "Year-ended 31 March 2018 Restated See note 2": 11.6}, "Amortisation of intangible assets": {"Year-ended 31 March 2019": 16.9, "Year-ended 31 March 2018 Restated See note 2": 25.2}, "Research and development expenditure": {"Year-ended 31 March 2019": -143.9, "Year-ended 31 March 2018 Restated See note 2": -140.3}, "Operating lease rentals: -- Property": {"Year-ended 31 March 2019": 14.0, "Year-ended 31 March 2018 Restated See note 2": 12.5}, "Operating lease rentals: -- Other": {"Year-ended 31 March 2019": 1.6, "Year-ended 31 March 2018 Restated See note 2": 1.6}, "Operating lease rentals: -- Pension scheme contributions": {"Year-ended 31 March 2019": 8.9, "Year-ended 31 March 2018 Restated See note 2": 8.4}, "Operating lease rentals: -- Impairment of trade receivables": {"Year-ended 31 March 2019": 0.6, "Year-ended 31 March 2018 Restated See note 2": 0.6}, "Operating lease rentals: -- Net foreign currency differences": {"Year-ended 31 March 2019": -1.5, "Year-ended 31 March 2018 Restated See note 2": 6.9}}
property_2019 = df["Operating lease rentals: -- Property"]["Year-ended 31 March 2019"]
property_2018 = df["Operating lease rentals: -- Property"]["Year-ended 31 March 2018 Restated See note 2"]
answer = ( property_2019 - property_2018 ) / property_2018 * 100.0