Rumus Penurunan Lulusan 5 Tahun Terakhir
$$\begin{align}
RPL &= -\frac{1}{4} \times \left(\frac{NLulusan_{TS-3} - NLulusan_{TS-4}}{NLulusan_{TS-4}} + \frac{NLulusan_{TS-2} - NLulusan_{TS-3}}{NLulusan_{TS-3}} \right. \\
&\quad \left. + \frac{NLulusan_{TS-1} - NLulusan_{TS-2}}{NLulusan_{TS-2}} + \frac{NLulusan_{TS} - NLulusan_{TS-1}}{NLulusan_{TS-1}}\right) \times 100\% \\
&= -\frac{1}{4} \times \left(\frac{1990 - 2290}{2290} + \frac{1812 - 1990}{1990} \right. \\
&\quad \left. + \frac{1701 - 1812}{1812} + \frac{565 - 1701}{1701}\right) \times 100\% \\
&= 23.74\%
\end{align}$$
