[Gameplay/Client] Error with Percentage cooldown on Greater Glyph of Scaling CDR

The bug I am encountering deals with the Percentage cooldown on "Greater Glyph of Scaling Cooldown Reduction".

On the store, it indicates that it will be -0.09% cooldowns per level (-1.67% at champion level 18), seen below: http://i.imgur.com/FxGlmHd.jpg

However, when applied on a rune page, it gives a total of "-14.6% Cooldown Reduction at level 18" (seen below). http://i.imgur.com/jTJadIv.jpg

The 14.6 percent is correct using the 0.09% per level x 18, (.09 per rune x 18 levels x 9 runes = 14.58 CDR ≈ 14.6). However, when using the provided level 18 percentage (-1.67) this number should be 15.03 (1.67 x 9).

I imagine this is purely a typo, however, it should be corrected for ease of understanding and accuracy.