Typically, I am at 90%+. My best streak was 33-34 straight
However, when I first got after coyotes in the very early 1990's, I used my Ruger M77 Sporter in 22 Hornet. This is about a 6lb rifle, and the factory trigger pull was about 6lb as well, making it very difficult to shoot accurately, especially on a coyote.
I got permission to hunt coyotes on a private duck hunting club one afternoon. I went out at about 2pm, made 5-6 stands, called in at least one coyote on each stand, and missed every one of them!
I was stoked that I called in so many coyotes!
So, I get back to the owners house, and he come out and asks "how'd you do?", and me, being pumped about how many I called in, tell him my story. He then asks "how many did you get?" with a big smile on his face.
When I told him I missed them all, the smile turned into a scowl and he started swearing at me- "I don't need you out here educating these F&&& things, I need them killed. If you can't do it, I don't need you out here, I don't want you here".
Wow, he was pi##ed!.
I stayed away for 2 years, getting my skills in place, especially the shooting skills. When I stopped by again, he remembered me and was very hesitant to let me out, but he did, and I came back to the house with the 3 coyotes I called in. For the next 15 years, before he sold it to Colorado DOW, it was my honey hole.