Q3 2018Q2 2018Q1 2018Q4 2017Q3 2017
Restaurant-level operating margin16.4%15.5%12.9%15.1%15.6%
Restaurant-level operating margin growth (bps)7750189327319
Operating margin1.8%-3.5%-2.4%0.1%-6.6%
Operating margin growth (bps)838-2831,9553,43283
Net profit margin0.9%-5.1%-3.2%-0.4%-7.3%
Net profit margin growth (bps)8202762,0593,46372

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