Percents are represented by the following expression:
[tex]\text{Total}\cdot\frac{\text{percent}}{100}=\text{equivalent number to the percent}[/tex]The members decreased 80-52=28 members, then:
[tex]80\cdot\frac{\text{percent}}{100}=28[/tex]Isolating the variable percent:
[tex]\begin{gathered} \text{percent}=\frac{28\cdot100}{80} \\ \text{percent}=35 \end{gathered}[/tex]The number of members decreased 35%
