Here's mine (non-resolutions for 2021)
Only eat when hungry
I eat what's on my plate. When I'm bored I eat to entertain myself. I eat good food because it's good. My 1% change will be to eat only when I'm hungry. Obvious for some, a small step in the right direction for me.
Go outdoors every day
Especially with lockdown and remote working, I can go whole days without leaving the house. My 1% change will be to go outdoors every day.
Spend 5 minutes meditating
I am usually tired and overwhelmed. It's my default state (because of bad self-care). I will always find things to do, especially if they are outstanding around me, and then I'll help others.
So my 1% change will be to spend five minutes a day, with my eyes closed, meditating.