Well, your link says Ukraine 143 square MILES, Russia 331
If you have trouble calculating, try this link
https://www.google.com/search?q=square+miles+to+km
If you have trouble calculating, try this link
https://www.google.com/search?q=square+miles+to+km
From the start of the year. This presumably includes the "capture" of Bakhmut, the last significant Russian advance. Since the start of the Ukrainian counteroffensive in mid-2023 the gains have been mostly one way.
So let's try again:
According to New York Times (famous for its pro-Russia stance) since Ukraine counteroffensive started, Russia took 860 square kilometers, and
Ukraine took 370 square kilometers.
Ukraine took 370 square kilometers.
Not true, is it?
If you want to split hairs, when battle of Bakhmut ended, and when counteroffensive started?