Sprocket changing destructions.
It is also easier to just hold the rear brake lever down while loosening the sprocket. Take the big nut off this way, slip sprocket off, slip new sprocket into chain, reinstall, hold brake again and tighten big nut. Adjust chain tension and away you go.
45 Minutes and 1 beer job .

A word to the wise is not necessary. It is the stupid ones who need the advice. Pat