It is simply conflating two different terms, like the other poster said.
Winning percentage - no, they are 5-7; they have only WON 41.67% of their games - not above 0.500. "simple math" as another poster stated.
Points percentage - yes, they have gotten 13 of 24 possible points; 54.2% of available points thus far. 89 point pace, in a down year for the league, that gets you near the wild card.
The NHL website even calls is "P%", not "W%".