Alan Pardew's men have now won only one of their last nine league games and currently sit in 14th place in the table, and the situation could deteriorate further over the weekend as they are not in action again until Monday night, when Wigan head for St James' Park.
But Tiote told the club's official website: "This was so difficult for the team to take.
"We played well and were the better team on the pitch. We tried to pass the ball well and scored the first goal, but after that we were unlucky because it was two sloppy goals that cost us the game.
"Everyone is very disappointed, but we were much brighter than we have been recently and had more energy on the pitch.
"If you play well like we did, then you expect to win the game, so if we continue to play like this, we will get three points again very soon."