But the answer is right there. You have zillions of "Chrome Helper" processes eating up all your memory. Quick Chrome and recheck your state.
Why Chrome behaves like this? Either:
- you keep a zillion pages open, each with some very-heavy web app (like Google docs and such)
- you have a "malware" installed on your Mac which leeches on Chrome, making it open lot's of extensions on your behalf. Download and run "MalwareBytes" free malware remover for Mac to see if that's the case.
- Have you joined any of those vicious "programs" of "download this and receive 99 cents per run of our software" ??? Maybe you rolled into some bad program where you actually "sell your Mac cycles" for others? That "Chrome helper" is a background-only mac "Daemon" running within Chrome, and doing something. It would be nice to know what.
As a first step - close all your chrome windows and tabs - individually, and manually. make sure no page is open in chrome - and look again on your activity monitor. If those hogs are all gone - you're done. Quit Chrome, and you're clear.