Here're stocks that have seen the greatest decline from their all-time high

Unsustainable debt levels and uncertain business outlook is a common thread among companies

Shares of several firms that were previously large-caps are cutting a sorry figure at the bourses these days. 

Of the 924 companies (with current market cap of at least Rs 500 crore), 45 are down by over 90 per cent from their all-time highs.

About 42 per cent have lost over half of their market value, while only about 10 per cent companies are less than 10 per cent shy of their all-time highs. 

This, despite the benchmark Nifty trading less than 2 per cent below its all-time high. Unsustainable debt levels and uncertain business outlook is a common thread