# % Below ATH

Does anyone know the correct script to get the "percent below all-time high" for an issue. I am using the following but noticing the data is not correct.

(HIGHESTHIGH(RANGE=All Time)-close(0))/close()

Hi Steven,

You don’t need to do the calculation manually, there is a function that does it automatically called Range from Extremes RFE()

An example script for % from All Time high would be:

`RFE(BACKTYPE=All Time)`

On a show view the result would look like this:

Show View using the above script has a value of 12.07% from AAPLs all time high.

What about that black line at the ATH.

Can't we plot a code on the chart that says ATH - the date & then also list the % that the share has until it reaches the ATH?

This way the chart can dynamically update. Without having a show view tab below chart ... ?

You don’t need to script it, you can use the Range from Extremes tool itself to plot the ATH / ATL on the chart, and the date will appear when you hover over the line for each…

https://help.optuma.com/kb/faq.php?id=522

Note if you want to display as % in a watchlist divide by 100 and change the column type to Percentage:

RFE(BACKTYPE=All Time)/100

Also you can colour-code the cells based on values by right-clicking on the column title and going to Custom Labels, so within 5% of ATH set to green:

Also, Darren gave me this code for 52 week drawdown. It has worked well for me. I do like the RFE as I was trying to find the distance above recent highs, and that may work well. Thanks.

```//1 year Drawdown
h1 = HIGHESTHIGH(BACKTYPE=Years, BARS=1);
C1 = CLOSE();
ch1 = ((c1-h1) / h1)*100;
p1 = IF(ch1 < 0, ch1, 0);
//plots avg drawdown over the 1 year
plot1 = p1;