Benchmark Sensex tumbled 533.50 points and the broader Nifty declined to the 25,860 level on Tuesday as persistent foreign fund outflows, a weak rupee and sluggish global market trends dented investor sentiment.Illustration: Dominic Xavier/RediffThe 30-share BSE Sensex tanked 533.50 points or 0.63 per cent to settle at 84,679.86.During the day, it dived 592.75 points or 0.69 per cent to 84,620.61.The 50-share NSE Nifty dropped 167.20 points or 0.64 per cent to 25,860.10. Among Sensex firms, Axis Bank tanked ...