About the number of undeads

[SHRev] says that there are 60 000 Vampires : 40 000 Cainites, and 20 000 Kuei-Jin. We can also count 6000 Mages and 18 000 Garous.

The proportions for each clan might be :
5%
Assamite (2000)
10%
Brujah (4000)
7%
Gangrel (2800)
3%
Giovanni (1200)
5%
Lasombra (2000)
10%
Malkavian (4000)
10%
Nosferatu (4000)
2%
Ravnos (800) NB: only 100 survived the Week of Nightmares
5%
Setite (2000)
10%
Toreador (4000)
5%
Tzimisce (2000)
8%
Tremere (3200)
10%
Ventrue (4000)
5%
small bloodlines (2000)
5%
Caitiffs (2000)
Assamites
You can look at Clayton's unofficial numbers for Assamites. He used the number of 70000 Vampires to guess a total of 3000 Assamites. With a corrected figure of 2000 Assamites, we deduce that :