50% of 155th Naval Infantry KIA.
“We have the statements of Russian POWs who surrendered at Vuhledar. In modern armies casualty rates that high are considered a total loss. Basically, the units of the Russian 155th Guards Naval Infantry Brigade from Vladivostok have been destroyed.”
https://twitter.com/Tendar/status/1624360212449591298
40th NI Brigade fared no better.