Q3 2018Q2 2018Q1 2018Q4 2017Q3 2017
Restaurant-level operating margin18.7%19.7%19.5%14.9%16.1%
Restaurant-level operating margin growth (bps)26286179137191
Operating margin95.3%5.4%8.1%5.4%2.7%
Operating margin growth (bps)9,253-376124245180
Net profit margin3.1%3.7%5.2%3.9%1.7%
Net profit margin growth (bps)138-2008624099

Notes:Restaurant-level operating margin represents restaurant-level operating income, which equals company-operated restaurants sales minus company-operated restaurant costs, which includes cost of goods sold (food, beverage and packaging), labor, occupancy and other operating costs, expressed as a % of company-operated restaurant sales