Wuh-wuh-wuh-one.
Well it depends on what you mean by change.
None. They don't believe in a higher power.
Let's go ride bikes!
None. Who do you think broke the filament in the first place
One hundred and one. Two to wash it, one to dry it, and ninety eight to talk about how dirty it was.
100. 1 to actually clean the shower, and 99 to stand around and talk about how filthy it is.