** Premium furniture retailer RH's RH.N shares slump 11% to $203 after the bell

** Company lowers fiscal 2025 revenue growth target between 9% and 11% from prior forecast of 10% to 13%

** Expects $30 million in additional tariff costs after mitigation efforts in second half of year

** Sees annual adjusted EBITDA margin of 19% to 20% from prior target of 20% to 21%

** Says it's aggressively responding to recent 50% tariffs imposed on imports from India, impacting 7% of RH's business, mainly hand-knotted rugs

** "We expect a higher risk business environment due to the uncertainty caused by tariffs, market volatility, inflation risk, and an increasing level of global discord," says CEO Gary Friedman

** So far, stock down ~42% YTD

(Reporting by Savyata Mishra in Bengaluru)

((Savyata.Mishra@thomsonreuters.com))