Numbers I have heard lately are between 6 and 11%. One in ten.
https://www.timesofisrael.com/more-t...g-covid-study/
https://www.forbes.com/sites/alisone...h=780c25b78ec5
The Forbes article mentions two studies- one saying 1/10 kids, and one more than half of kids end up with symptoms more than 120 days out.
I find the studies linking to lowered IQ especially worrisome.
It’s not the kids who are hospitalized that usually end up with long Covid. Most of these were mild, some even asymptomatic.