No need to do a water change unless it is on your schedule. Its not necessary for egg survival.
I don’t have an answer for you since I’ve never had angels spawn, but congrats!!I was checking out my tank before doing a water change until I noticed eggs on my sword plant. Looks like my angelfish are spawning. Once she is done laying eggs would it be safe to do a water change? How many percent should I take out? This is my first time having angel's spawn.
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If it is the first spawn chances are pretty good they won't hatch - if you do want them to hatch then make sure the water stays above the eggs. Btw if you get near them during the water change she will likely attack you so don't be overly startled when an angry angel charges your hand. It took my angels 4 or 5 tries to get it right....
Whats flirt and shimmy? For a minute i thought you had you know what angels ?