Talk:Cooldown reduction/@comment-108.46.146.16-20120430200112/@comment-4820583-20120503124958

Assuming you have 40$ CDR and a spell with a 100 seconds of cooldown, your spell would now have 60 seconds of cooldown.

For easy calculation, do this:

First substract your current CDR% from a 100%. In the above case, that would be 60% (100-40).

Then multiply your spell's base cooldown with 0.60 (the percentage number you got as a decimal behind a zero): 100seconds * 0.60 = 60 seconds (40% CDR).

Keep in mind that, for example, 9% is actually 0.09 and NOT 0.9 (which is 90%).