Russian Army have visually lost 18/ 187= 9.6% of its T-90A fleet 151/1054=14.3% of its T-72B3/B3M fleet 60/ 186=32.3% of its T-80U fleet 21/ 72=29.6% of its T-80BVM fleet
Actual figure will be significantly larger with the 60 unknown pieces and the 200-piece backlog.