Q1 2018Q4 2017Q3 2017Q2 2017Q1 2017
Restaurant-level operating margin10.6%10.8%14.0%12.6%11.6%
Restaurant-level operating margin growth (bps)-105-322-104-215-312
Operating margin-3.8%-4.1%0.9%-9.6%-6.0%
Operating margin growth (bps)185-295129-923-459
Net profit margin-4.3%-4.7%-0.4%-15.3%-4.9%
Net profit margin growth (bps)59325-30-1,462-338

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