You're not reading it wrong. That's actually a low value for the black share of murders; it's often above 50%.
The per capita rate of murder commission for blacks is about 8 times the general rate. It's true in the US, with its legacy of slavery, and also in England, with its equally bad legacy of slavery.
Or something.
EDIT: Actually, you are reading it wrong. That's 3,299 murders of whites, not 3,299 murders by whites.
The table shows 2,948 murders committed by whites ("Race of offender"), vs 3,218 murders committed by blacks.
It should be noted that table counts Hispanics as white (as does the 76% of population you cite). It has separate columns for if the offender is Hispanic.
Black 8228
Hispanic 575
Unknown 462
White 107
Asian/Other119
--------------
Total 9491
Per 100K
Black (non-hispanic) 8,000
Hispanic 575
White (non-hispanic) 89
This is something like a 100-1 difference? Can these numbers be right - I was having some trouble finding good data from Oakland though I know they look at this closely.
Suspect perhaps, but not convicted offender. And therein lies the bias & prejudice.
This table shows Race, Sex, and Ethnicity of Victim by Race, Sex, and Ethnicity of Offender, 2019
https://ucr.fbi.gov/crime-in-the-u.s/2019/crime-in-the-u.s.-...
One thing that stands out is that more often than not, the offender and the victim are the same race.
And overall numbers are similar between white and African American.