What exchange are you talking about?

Anyway the interest will drop to 8% in about 1 month and this will cut off from the Inflation's inflation (to say so).
This can be translated to 2 things:
1) the price will start to rise as there will be less coins forged by PoS.
2) the price will go down further as people will loose interest as they will not get as much coins as they were used to.

If we won't make some noise, make some promotions (marketing) about this project and bring new people in, i think the 2nd option is more plausible, unfortunately.