Grayscale Info (K) shows different percents of same colors in 2022 and 2023 version

[bdfg27649085aclt]

Adobe Photoshop 2023 24.1.1.

Win 10

I use info in K to check density of colors of common JPG in RGB mode. Since Photoshop 2018 black 90% was always the same black density. I transfer and use same color profile settings. But in Adobe Photoshop 2023 it is 3-5% lighter. What's wrong?

[D Fosse]

Different grayscale profiles; nothing wrong.

Numbers are relative to what profile you're using. This applies to all color numbers, and grayscale no exception.

[bdfg27649085aclt]

The same picture with the same profile gave another results.