Math Question

[RPatterson]

Down to 5 with 950 chips and 150bb I moved in on the button with K7 and the big stack in the bb called with TJ and hit. I was thinking to myself about what a stuipid call that was but then I wondered if he was actually getting the right odds, if he could see my hole cards.

Roughly he's calling 800 to win 1150. 800 divided by 1150 is 69%. Was this a plus ev by 9% or negative ev?

Also he had like 4000 chips and I had been very quiet. Do you guys like his call at all? It might have been plus EV since I held K7 but I think in general it was horrible.