Stealth from the Concealment power pool

The description of the power is: If, however, you attack while using this power, you will be discovered and will lose your stealth and some of your defense bonus.

Just wondering can anyone tell me how much defense one actually loses from Stealth when you attack? (more importantly, how much you actually retain).

Awesome, thank you!

It's pretty much twice Combat Jumping when not suppressed, and the same as Combat Jumping when suppressed. Most Defenses in the Pool give this same value. It's obviously strongest for Tankers, weakest for Blasters, but you might not expect some of the values, such as for Defenders it is as good as it is for Tankers.

You can also view your Combat Attributes to not only see what this value is, but also watch in real time as it is suppressed. I looked for a guide, but was a bit shocked that I couldn't find one. (There was one for using bind files to display attributes, but not a guide in general. Anyway) Short version is, go to your Powers tray, then click on where it says "Combat Attributes". You will see a big window with a list of options. Open the one marked "Defense", then right click on "Melee Defense" (you can monitor any, but Melee Defense will be the simplest) and select "Monitor Melee Defense". This will make a little window pop up with your current Melee Defense.

When you turn on Stealth, you should see the number go up by about 3-5%, and then when you start fighting, you should see that amount it went up by cut in half. If you have other Melee Defense powers they'll be added in to that total too. (You might monitor Smashing Defense or something if you have that kind of Defense)