How much did Portal 2 sell?

Have you been tracking the sales figures of the much-anticipated sequel to Portal? Many analysts were keenly watching its progress after the Stellar success of its predecessor. With its intricate puzzle design, captivating storyline, and immersive gameplay, Portal 2 had all the makings of a hit. So, the question remains: how much did Portal 2 sell? Did it manage to exceed the sales of its predecessor? Or did it fall short despite its widespread praise? With so much hype surrounding its release, we're all curious to know just how well Portal 2 performed in the market.