For example if the Daily ATR is $5 and the current range of the day is $10 this would be 200% the original move.
It is color coded (and can be modified) to change color when the Daily range is over 100% the ATR.
The time frame can be changed from Daily just be aware you must be on a lower timeframe then selected. So if you want to compare the current 30 minute ATR to the current 30 minute range you will need to be showing a 30 min chart or lower for it to calculate correctly.
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.