Indian stock markets on Monday followed the global bloodbath as it experienced one of the worst falls with both the indices Nifty and Sensex registering high losses during the opening trade. While the Nifty 50 index declined 414.85 points or 1.68 per cent to open at 24,302.85 points, the BSE Sensex slumped 2393.76 points or 2.96 per cent to open at 78,588.19 points.