What is the percentage constitution of company-operated restaurants among the total restaurants?
{"Company-owned restaurant buildings: -- On company-owned land": {"Operated": 9, "Franchise": 200, "Total": 209}, "Company-owned restaurant buildings: -- On leased land": {"Operated": 54, "Franchise": 581, "Total": 635}, "Company-owned restaurant buildings: -- Subtotal": {"Operated": 63, "Franchise": 781, "Total": 844}, "Company-owned restaurant buildings: -- Company-leased restaurant buildings on leased land": {"Operated": 74, "Franchise": 1054, "Total": 1128}, "Company-owned restaurant buildings: -- Franchise directly-owned or directly-leased restaurant buildings": {"Operated": "\u2014", "Franchise": 271, "Total": 271}, "Company-owned restaurant buildings: -- Total restaurant buildings": {"Operated": 137, "Franchise": 2106, "Total": 2243}}
company_owned_restaurants = df["Company-owned restaurant buildings: -- Total restaurant buildings"]["Operated"]
total_restaurants = df["Company-owned restaurant buildings: -- Total restaurant buildings"]["Total"]
answer = company_owned_restaurants / total_restaurants * 100.0