Answer:
[tex]\frac{16}{x} = \frac{80}{100}[/tex]
Step-by-step explanation:
To set up this proportion, we know that 16 must correspond with 80% and the x, the number we're looking for must correspond with 100%
[tex]\frac{16}{x} = \frac{80}{100}[/tex]
This would be the correct proportion, and you could simplify it to equal
[tex]\frac{16*100}{80}[/tex]