Talk:Rhino (Warframe)/@comment-24001080-20131002214358

"Roar" is affected by Vanguard Helmet

Power Strength -5%

With maxed Roar you normally have 50% bonus damage.

But with the Vanguard Helmet you only have 47,5% bonus damage.

5% of the 50% bonus damage is 2,5% => 47,5% bonus damage.

(50% - 2,5% = 47,5%)