Need help with scanning percentage raise/drop

You need to decide on how much price has changed over what period of time. Then you would look for either price has gone up by at least some amount, so, price today > price sometime ago times your chosen percent (greater than 1, like say 1.25, or twenty five per cent), or price has fallen by at least a certain amount - price today < price sometime ago times your chosen per cent, say .9, or 10 per cent).

If you want to limit how much price has gone up or down, you need to specify a range. To do that you would need two statements for up - say, more than 25 percent (like above) but less than 30 per cent, and two statements for down - say more than 10 percent (like above) but less than 15 per cent.

For some help, try these links. Don't let the word "advanced" scare you:

http://stockcharts.com/docs/doku.php?id=scans:advanced_scan_workbench


http://stockcharts.com/docs/doku.php?id=scans:advanced_scan_syntax

You can cut and paste sample scans from here:

http://stockcharts.com/school/doku.php?id=chart_school:scan_library:sample_scans