Where are you getting this number from and where did the source get their data from?
I did the math with 2013 statistics from the FBI for crime rates and some neutral and even anti-gun sources for the causality rates from gun violence about two or three years ago. Lots of math. And lots of giving the opposition the benefit of the doubt trying to find out what percentage of guns in civilian hand were used in a year to hurt someone. I included all injuries, deaths, suicides, accidents, justified and unjustified injuries and deaths with a gun. I even assumed each one of those events was done with a separate gun.
My result, and this is only for the year 2013 which was the latest FBI statistics I could find at the time, was that a bit more than 99.92% of civilian owned guns didn't hurt anyone that year. And that's assuming each shooting was with a different gun, and included even lawful and justified uses of a firearm in self-defense in the numbers.
I Posted my calculations and sources many, many times in many, many threads. I begged for feedback, for folks to find any mistakes I may have made or dispute my findings if they could. All I heard back were basically *crickets*.
Additionally, I've posted links to some of those early threads over the years, so if you want to find them please feel free to look at my history. I no longer have the link, sorry.
And it's not a case of confirmation bias. I worked as a newspaper journalist for a long time and it was part of my job to see if actual numbers supported sources claims. In this case they did not support the idea that guns are only used to kill. In fact, only about .08% of those in America were used so that year.