im confused at the general lose rate of nidalee jungle

???

Nidalee's Performance history via Champion.gg

http://s33.postimg.org/gr5zc4867/nidalee.png

There's been a substantial drop in her win-rate this patch, but the win-rate against games played shows a strong link to player experience with the champion. In other words, it requires skill to play a good Nidalee.

This seems to suggest a bunch of new Nidalee players. The games-played with champion pie chart shows most Nidalee players have less than fifty games, which agrees with that possibility.

So maybe there was some sort of promo recently that attracted a following?