# Qualitative understanding of negative step potential problem

In QM textbooks the single step potential problem is explained in great detail. However, it is hard to understand what happens when $$V_{0}<0$$. Could anyone please explain qualitatively, how the incident wave, transmitted wave, and the reflected wave behave?
$$V(x) = 0 (x > 0)$$
$$V(x) = V_{0}, V_{0}<0, (x \le 0)$$