Board Thread:Game discussion archive/@comment-26590116-20150707222800/@comment-24613667-20150720122149

The cooldown reduction is based on the collective percent, not a percent of a reduced percent.

10 second cooldown:

With 5% CDR: -0.5% = 9.5 second cooldown

With 25% CDR: -2.5% = 7.5 second cooldown

With 40% CDR (max): -4% = 6 second cooldown