Break this down a little further, by half:
1st Half 2nd Half
NYK 37.5% 35.9%
SAS 39.4% 26.8%
I think this is partially due to NYK being more veteran and able to handle the pressure better. But I also think that SAS wore down with the way they played defense. They pressured NYK all game and it takes a toll. Overall, every team I checked shot a little worse in the 2nd half. Players get tired, shots don't fall quite as much. If I find time, I may do a deeper dive into 1st half vs. 2nd half 3-point shooting.