According the International Institute for Strategic Studies (IISS) Russia lost around 50% of its pre-invasion fleet of modern T-72B3s and T-72B3M main battle tanks.

The inventory of T-80BV/U tanks is estimated to have been reduced by even two-thirds.https://t.co/C4dXZYNUaz pic.twitter.com/BWjSRkFZj5

— (((Tendar))) (@Tendar) February 15, 2023