What would the new civilization look like?

I recently read the old book Earth Abides. This is the story of a guy that survives a pandemic that wipes out most people on Earth. The story follows along with all the changes he noticed happening because most of the humans were suddenly gone. In the space of his lifetime things changed tremendously and the society that was rising again looked nothing like the one he remembered.

The question is if 99.5% of all humans disappeared in the next month, what would happen to the survivors over the next 100 years? What would society look like? Would they be able to create any of the things we take for granted today?