We have the basic proportion:
[tex]\frac{P}{100}=\frac{A}{B}[/tex]
Where P is the percentage, A is the "part" and B is the "whole" (P% of B is A). From the problem, we identify:
[tex]\begin{gathered} A=67 \\ B=67 \end{gathered}[/tex]
Then, using the proportion above to find the percentage:
[tex]\begin{gathered} \frac{P}{100}=\frac{67}{67} \\ P=100\text{\%} \end{gathered}[/tex]
