Two upscale retailers saw declines in their shares yesterday on fears that sales are starting to slow down.

Lululemon, a Vancouver-based yoga-wear retailer, fell 8.8 percent to $63.84 after projecting full-year earnings and sales that trailed analysts’ estimates, while Coach fell 1.2 percent to $62.07, the lowest price since Jan. 13.

Lululemon may be hurt by a slowdown in demand, said Edward Yruma, an analyst at Keybanc Capital Markets.

Full-year profit will be as much as $1.60 per share, the company said vs. the consensus estimate by analysts of $1.63. Revenue for the year will total as much as $1.34 billion, trailing the $1.35 billion average estimate.

Coach, which has dominated the US luxury handbag category for more than a decade, reported fiscal third-quarter sales that beat analysts’ estimates by the smallest margin in 11 quarters as North American department-store sales slipped.

“Obviously, the macro environment is uncertain,” CEO Lew Frankfort told investors June 5 at a consumer conference.