The formula to calculate the Peak Overshoot Ratio (POR) is:
\[ POR = \frac{M - S}{S} \]
Where:
Let's say the maximum peak value (M) is 15 and the steady state value (S) is 10. Using the formula:
\[ POR = \frac{15 - 10}{10} = 0.5 \]
So, the peak overshoot ratio is 0.5.