Final answer:
Increasing the percentage overshoot in a system response can result in larger deviations and slower settling time, while decreasing the percentage overshoot reduces deviations and helps the system reach stability faster.
Step-by-step explanation:
The effect of increasing or decreasing the percentage overshoot in a system response depends on the system's characteristics and the amount of delay in negative feedback.
Increasing the percentage overshoot means that the system response will have a larger deviation from the target equilibrium state before reaching stability. This can result in oscillations and a longer settling time. On the other hand, decreasing the percentage overshoot reduces the deviation and helps the system reach stability faster.
For example, in a logistic curve, increasing the delay in applying negative feedback can cause significant overshoot and oscillations before reaching the steady state value.