A weird expression

$\% = 0.01$

$\frac{\sin \%}{\%} \approx \lim_{x \rightarrow 0} \frac{\sin x}{x} = 1$

$\frac{\sin \%}{\% \ \%} \approx \frac{1}{\%} = 100$

$x > 0 \longrightarrow \sin x < x \therefore \frac{\sin \%}{\% \ \%} \approx 99.99\ldots$

$\therefore \lfloor \frac{\sin \%}{\% \ \%} \rfloor = 99$