You should read Revolutionary Strategy by Mike Macnair that goes into this topic.

I suggest reading Guerrilla Warfare by Che Guevara. He answers most of your questions in that short book, much better than I could in a comment section. And it has valuable insight in tactics that I think every leftist should know.

People have done the math. About 7% of the population has to be committed revolutionaries (ie, ready to pick up a rifle if absolutely needed) or strong organised support networks (ie, ready to go to jail.) About 20-30% have to be fellow travellers in some way.

you need the girl reading this 😘

I have heard people say “1% of the population in the streets” I think (maybe??) more than once, BUT I don’t know if it was based on any historical evidence at all.

And it would probably mean doing some real obstruction to society that would shut down critical infrastructure. It was probably cited more with “protest” in mind rather than “revolution” too.