Q2 2018Q1 2018Q4 2017Q3 2017Q2 2017
Restaurant-level operating margin100.0%12.9%15.1%15.6%15.0%
Restaurant-level operating margin growth (bps)8,497189327319135
Operating margin-3.5%-2.4%0.1%-6.6%-0.7%
Operating margin growth (bps)-2831,9553,43283860
Net profit margin-5.1%-3.2%-0.4%-7.3%-7.8%
Net profit margin growth (bps)2762,0593,46372379

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