Improved Hunter's Mark

From wow.incgamers.com

Talent: Improved Hunter's Mark
Effect: Causes a % of your Hunter's Mark ability's base attack power to apply to melee attack power as well.
Statistics: Rank 1 = 20%, Rank 2 = 40%, Rank 3 = 60%, Rank 4 = 80%, Rank 5 = 100%.