What percentage of total restructuring charges in 2019 consisted of Facility relocation and closure charges?
{"Severance and related charges": {"2019": 3041, "2018": 4239, "Cumulative Cost Through December 31, 2019": 7280}, "Facility relocation and closure charges": {"2019": 1996, "2018": "\u2014", "Cumulative Cost Through December 31, 2019": 1996}, "Total restructuring charges": {"2019": 5038, "2018": 4239, "Cumulative Cost Through December 31, 2019": 9277}}
facility_relocation_and_closure_charges_2019 = df["Facility relocation and closure charges"]["2019"]
total_restructuring_charges_2019 = df["Total restructuring charges"]["2019"]
answer = facility_relocation_and_closure_charges_2019 / total_restructuring_charges_2019 * 100.0