** Shares of British catering group Compass Group CPG.L fall as much as 6% to 2,480p
** Stock among top losers on the FTSE 100 index .FTSE, which is down 0.31%
** Exane BNP Paribas downgrades stock to "underperform" from "outperform", cuts PT to 2,500p from 3,000p
** Cites weak start to the year, significant layoffs, and lower client retention, especially in pressured healthcare sector
** Analysts' average rating is equivalent of "hold", with a median PT of 2,900p - data compiled by LSEG
** Stock down 7% so far this year
(Reporting by Rashika Singh in Bengaluru)
((rashika.singh@thomsonreuters.com))
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