What was the percentage change in Buildings and building equipment in 2019 from 2018?
{"Land": {"2019": 35.6, "2018": 34.8}, "Buildings and building equipment": {"2019": 512.9, "2018": 500.0}, "Machinery and equipment": {"2019": 2183.6, "2018": 2129.0}, "Construction in progress": {"2019": 150.7, "2018": 83.6}, "Total at cost": {"2019": 2882.8, "2018": 2747.4}, "Less: accumulated depreciation and amortization": {"2019": 1516.6, "2018": 1434.0}, "Total property, plant, and equipment": {"2019": 1366.2, "2018": 1313.4}}
buildings_2019 = df["Buildings and building equipment"]["2019"]
buildings_2018 = df["Buildings and building equipment"]["2018"]
answer = (buildings_2019 - buildings_2018) / buildings_2018 * 100.0