Formula is last close_price x / 1 cr or (close_price x /10000000). The second figure is the (default to 20sma ) again in rupee crores. The third is the relative - todays / 20 day moving average.
Helpful especially when putting on a trade for a thinly traded stock. It is a quick gauge to how large or small one would want to buy or avoid. Helps manage risk. Also, great to see large volumes in crores to gauge institutional buys or sells.
On 10/NOV/21 - In the chart displayed here, Titan volumes are on average quite substantial as one can see. The 20 day moving average is 550 CR+. 10/NOV volumes are shown as 226 CR and the RVOL is 0.41 (226/550).
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.