Allocate NY State Adjustments Part-Time Resident

In 2024, I was a part-year NYC resident (between September 2023 and February 2024).

When preparing the NY state I came to an "Allocate New York State Adjustments" page. The text says: "Because your residence changed during 2024 you must allocate your New York State adjustments of $644 based on the time you spent as a resident of New York City or Yonkers. Your New York State Adjustments below must equal $644." This number doesn't look familiar to me. Where can I find out how this number was calculated or what to do with it? I am not sure what other info I can provide to be helpful, so please let me know!