What is humanity's completion rating?

In the video game world a completion rating of 100% (usually) means you’ve explored and collected all items, finished all quests, found all the secrets and so on. If we were to apply that to the endeavor of mankind, what would our completion rating be?

100% would mean things like mastered space travel, fully understand our own biology, astrophysics and the nature of the universe, discovered the best building materials and techniques and stuff like that.

Where do you think we are at now? and how far into the future will we see a 100% if ever? Has that rating grown exponentially in the past couple hundred years?

Note a 100% would not indicate all areas explored as that may be impossible