Small problem with "Scaling Cooldown Reduction" runes on new client

There seems to be a small problem on the new client that has to do with multiplying the effects of scaling cooldown runes. Since I have 6 scaling cooldown runes then I should have [ 6 x 1.67% = 10.02% ] cooldown reduction. But when looking at my rune page it states that I have only 9.7% cooldown reduction. I was wondering if this meant the runes actually had a different value, perhaps 1.62% on the new client as this would be closer to that actual value of the calculations. I have attached an image showing the problem. https://postimg.org/image/4zj91ey69/