#### Answer

% A's= $9.21\%$
% B's= $28.947\%$
% C's= $48.684\%$
% D's= $10.526\%$
% F's= $2.63\%$

#### Work Step by Step

We find:
% A's= $\frac{7}{76}\times100\%=9.21\%$
% B's= $\frac{22}{76}\times100\%=28.947\%$
% C's= $\frac{37}{76}\times100\%=48.684\%$
% D's= $\frac{8}{76}\times100\%=10.526\%$
% F's= $\frac{2}{76}\times100\%=2.63\%$