First off, I have no idea who that is, maybe I've heard of something they've said? I have literally no idea. In the second instance, that's just a clear misunderstanding, here's what you asked, specifically:
"As an educator, I am interested in hearing your guesses as to how you would go about getting that number"
From a second glance, I see where the confusion came from, and that's me getting: how would people go about getting that number? And assuming you were referring to what I referred/implied to, a false statistic, therefore my answer was to answer how people got false statistics, which was an error on my part, I'll admit. However, the answers I gave were legitmately reasoned answers to what I thought you had asked, as I showed in my last post, in reference to the ACTUAL question. Which is going about getting the number you provided:
"00992366412% of all American guns were used to kill people last year in America."
Again, this was an off comment, not sure about the accuracy of your stats, as I pointed out, this entire question is misleading due to the difference in nature of the car, thus the entire number cited makes no difference. I will, however, still try my best in going about getting this answer. First of all, well, I'd see if I could find an official source with verified numbers, as I could easily make a mistake in how I look at things.
While I couldn't immediately find a source for this specific question, I did find one that was illuminating in it's perentages:
"Three-quarters of all U.S. murders in 2017 – 14,542 out of 19,510 – involved a firearm. About half (51%) of all suicides that year – 23,854 out of 47,173 – involved a gun"
Another telling statistic I found, stated thusly:
"About 40% of Americans say they own a gun or live in a household with one,
according to a 2017 survey, and the rate of murder or manslaughter by firearm is the highest in the developed world. There were almost 11,000 deaths as a result of murder or manslaughter involving a firearm in 2017."
But then I thought, why not, let's just take the numbers of total guns in America, and then take the total number of homicides by guns, and see what what we have.
"The Small Arms Survey stated that U.S. civilians alone account for 393 million (about 46 percent) of the worldwide total of civilian held firearms.
[2]"
Therefore, even giving myself the most generous, one gun only commits one murder, you get: Only 1 gun per 28,156 guns commit a murder or an even lower number of 0.0035%, but again, I think this number is pretty misleading. Not only should we actually consider the actual use of the thing we're talking about, we should consider the weapon of choice for most murderers, which is clearly, from the stats I used: a gun. As I pointed out, guns are made to kill, they were designed to, and it should come across as no surprise that the vast majority of homicides are committed by people, using a gun.