Dynamic Range in %

Specs are often difficult to compare due to different standards 
BMPCC and BMCC has a dynamic range of 13 stops.
Canon C100 has a dynamic range of 800%.
How many stops is 800%, and how many percent is 13 stop?

BMPCC and BMCC has a dynamic range of 13 stops.
Canon C100 has a dynamic range of 800%.
How many stops is 800%, and how many percent is 13 stop?