Is there a standard time ratio for how long it takes to build the foundation of a skyscraper, as opposed to the superstructure?

I realize it may vary based on the amount of stories. Perhaps there is an equation that takes into account the amount of stories.

I am using the information as a learning metaphor, and have always observed that the foundation of a building take a long time to build, and the superstructure sometimes seems like it goes up overnight. Is that in fact true from an architectural/building standpoint?