Sensex declined as much as 0.34 per cent or 273 points to 77,881, hitting an intraday low in the morning trade and Nifty decreased 81 points or 0.33 per cent to 24,390. Among sectoral indices, Nifty Metal was top gainer and rose 0.86 per cent, while Nifty PSU Bank gained 0.60 per cent. On the downside, Nifty FMCG fell 0.64 per cent, followed by Nifty Realty at 0.58 per cent and Nifty Healthcare Index at 0.41 per cent.