How do you break down the type of blood that you have in you (ancestors)?

Question:

How do you break down the type of blood that you have in you (ancestors)?

Father's side: his mother
father's grandmother is full blooded cherokee
father's grandfather is full blooded afr. amer.
Father's side: his father
father's grandmother is full blooded afr. amer.
father's grandfather is full blooded caucasion
so that makes my grandmother 50%cherokee, and 50%black
and makes my grandfather 50%white. and 50%black
making my father 50%black,25%white,and 25% cherokee

mother's side:her mother
mother's grandmother is 50%cherokee, and 50%black
mother's grandfather is 100%black
mother's side: her father
mother's grandmother is 100% black
mother's grandfather is 100% black
making my grandmother 25% cherokee, and 75% black
and my grandfather 100% black

so what percentage of mixed blood am I

Additional Details

3 months ago
If my calculations are incorrect please explain to me thank you.

Best Answer - Chosen by Asker: 3 months ago
If my calculations are incorrect please explain to me thank you.