We can calculate the percentage of females dividing the number of females by the total participants (females and males), and then multiply by 100%.
[tex]f=\frac{121}{99+121}=\frac{121}{220}\cdot100\text{ \%}=0.55\cdot100\text{ \%}=55\text{ \%}[/tex]The percentage eof females is 55%.
