Paring its early gains, the Bombay Stock Exchange benchmark Sensex today declined by 152 points.The 30-share index, which had gained 162 points during the day, closed at 16,806.66 points, a loss of 151.88 points over last close. The wide-based National Stock Exchange index Nifty lost 41.65 points at 4,985.Brokers said the rupee which traded below 47 level today against the US dollar triggered the selling in IT stocks.