The percentage is more important, and it's basically the same size as 2012 which is the appropriate comparison (2016 and 2020 had other, viable candidates to vote for).
Numbers are higher... But that's the issue isn't it? Seems to me an even larger portion of voters came out to "anti-protest" the protest voters too.
You can't honestly tell me 39% is closer to 13% than 10%. 3% is not significant, it's an error margin on a poll.
The significant part is the absolute numbers, but that comes with caveat that the Biden vote was 3x Obama's in 2012 (and is 80% of the vote, which is a little less because of unviable candidates so unfortunately there's a little muddying).
Honestly, the whole thing is kinda proving to me the pro-palestine movement still isn't really big in the US despite the optics. Or, at the very least, there's still a large pro-Israel contingent that dwarfs them. And probably why Biden's been ignoring them.