You need more digits.
That's a common problem when we discuss things in percentages. It naturally means there's only 100 possible items. So, anything in the <1% is the same. But, it's not really true, those extra missing digits are hiding information.
Making up some numbers, 0.1% and 0.01% the first is 10 times more likely than the second. Not just a small amount. If we looked at it as 10% vs 1% everyone would feel different than 0.1% vs 0.01%, but the relative difference is the same.
So, for your second number associated with the risk. You need a lot more decimal places for both the vaccine and COVID (both death and long term impacts).
At first, adding all the extra digits feels silly. But, those statistics are also being applied to a huge number. Say 1,000,000 kids are the sample size, and 0.001% are impacted. That's clearly rare, but for those 1,000 kids that are impacted, it's significant to their lives, possibly devastating.
My hunch is you'll find the risk from COVID requires many less digits than the risk from vaccine does. Making the risk from vaccine even with the 100% in the first part of the equation lower.