Look for APTR (Average Percentage True Range), it is found on many platforms these days. The formula is (Average True Range/Close)*100.
If your platform does not have this you can setup a formula in Excel or Open Office, or do it by hand with a calculator - all you need is the ATR and last price.
In this example APTR gives the average daily percentage change over the last 10 days from stocks in the S&P100. View attachment 185662