Chelsea are desperate for backup in attack for inconsistent Spain international Fernando Torres, who is the London team's most used outfield player this season.
"It's done, he will go to Chelsea with our blessing. He has done fantastically for us, it's a big club, good luck to him," Pardew told Sky Sports News ahead of Newcastle's clash with Everton on Wednesday.
"For us, it's not a bad thing because of all the uncertainty of whether he was going to stay is now done. We can move on, we're a massive club here. This club is bigger than any player for sure. In some respects, I'm pleased."
Newcastle earlier confirmed Chelsea's interest in Ba which "triggered the release clause in the player's contract," read a statement on their website.
"We prepared yesterday with Demba in the side. I was assuming that. I was in the dark as I have been on most of this particular deal because obviously the ball was in Demba's court," added Pardew.
Ba finished the 2011/12 campaign as the club's top league scorer with 16 goals including another hat-trick against Stoke.
He has continued his free-scoring ways this season, bagging 13 league goals to lie joint second in the overall chart behind Manchester United's Robin van Persie (16).
The move may also dampen speculation that Chelsea are trying to sign Atletico Madrid's Colombia striker Radamel Falcao, who has scored 17 goals so far in La Liga to take his side to second behind free-scoring Barcelona.
