Shares of Cava Group tumbled late Tuesday after the Mediterranean fast-casual restaurant chain trimmed its full-year same-store sales outlook.

CAVA Group's same-restaurant sales came in well short of estimates as diners pulled back on spending. The Mediterranean-themed fast-casual chain also missed revenue forecasts and slashed its same-restaurant sales growth outlook.

While second quarter revenue rose 20%, the fast-casual restaurant operator is navigating a “fluid macroeconomic environment.”