Q2 2018Q1 2018Q4 2017Q3 2017Q2 2017
Restaurant-level operating margin16.3%14.7%14.3%14.6%16.1%
Restaurant-level operating margin growth (bps)15-213-407-577-546
Operating margin2.4%-0.6%-3.1%-0.5%1.4%
Operating margin growth (bps)91-300-497-522-422
Net profit margin-3.6%-0.9%33.3%-11.5%9.9%
Net profit margin growth (bps)-1,353688-1111,621-720

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