Total number of STD cases = 1,945,546
Number of chlamydia cases = 1,526,658
Number of Syphilis cases = 23,672
Number of gonorrhea cases = 395,216
[tex]\begin{gathered} \%\text{ of chlamydia = }\frac{Numbe\text{r of chlamydia cases}}{\text{Total number of STD cases}}\times100\% \\ \%\text{ of chlamydia =}\frac{1526658}{1945546}\times100\% \\ \%\text{ of chlamydia = }0.785\times100\% \\ \%\text{ of chlamydia = 78.5\%} \end{gathered}[/tex]