Markets declined nearly 1% on Friday as minutes from the US Federal Reserve showed the increasing prospect of reduced monetary stimulus this year stoking fears among investors. Fast-spreading delta virus strain also caused nervousness about economic growth. The BSE Sensex ended at 55,329.32, down 300.17 points or 0.54%. The Nifty was at 16,450.50, down 118.35 points or 0.71%.