$$\frac{75}{100}=75 \textbackslash\%$$,  $$100\textbackslash\%-75\textbackslash\%=25\textbackslash\%$$,  $$25\textbackslash\%$$ of the apples are rotten. 
$$75$$ out of $$100$$ apples are \textbf{not} rotten. What percentage of the apples are rotten? 
Options:
- 75\% 
- 100\% 
- 25\% 
- 50\% 
- 175\% 