The restaurant chain on Monday reported a sharp 4% drop in domestic same-store sales for February, badly underperforming the 0.7% drop expected by analysts. The decline was due to “ongoing aggressive competitive activity,” according to McDonald’s (MCD).

In a prepared statement, McDonald’s made a vague promise to reassert itself as a “modern, progressive burger company.” But as per usual with monthly sales data reports, McDonald’s didn’t publicly outline the details of that strategy beyond promises to focus on elements that matter most to customers: “high-quality food and beverage” menu items and a compelling value.

McDonald’s has reported weak results at home for over a year, hurt by changing preferences as so-called fast-casual chains that churn out healthier meals quickly for just a few bucks more than what McDonald’s charges have taken some of the fast-food giant’s business. The company has a new CEO, Steve Easterbrook, who took over the reigns after a relatively short tenure by Don Thompson.

Ultimately, McDonald’s has been hurt by the fact that consumers are spending more money at chains like Chipotle (CMG) and Panera (PNRA), which sell items for slightly higher prices but promote a perception of quality that McDonald’s lacks. The company is also challenged by higher-end burger chains like Shake Shack (SHAK), though those chains are often tiny in size and are arguably targeting a different demographic with the sale of alcohol and other items not sold at McDonald’s.

The weak February sales signal that challenges that lie ahead for Easterbrook. McDonald’s has faced calls that the company’s board also needs a shake up, and the company is moving to improve its image by taking high-profile steps, including only serving antibiotic-free chicken, and later this year using milk from cows not treated with an artificial growth hormone. There were even rumors that surfaced today that McDonald’s could consider adding kale to its menus, though a McDonald’s spokeswoman said there wasn’t any news to share on that front.

Overall, McDonald’s same-store sales slid 1.7% across the entire corporation, worse than the 0.3% drop projected by analysts surveyed by Consensus Metrix. Same-store sales slipped 4.4% in the Asia/Pacific, Middle East and Africa region but rose 0.7% in Europe.