I don't know the numbers but I will give you an example.
Auto purchase price $20,000. Section 179 taken on entire amount=$20,000 deduction on Schedule C. You are right that an auto has a 5-year useful life.
First-year depreciation on a 5-year asset is 20%. This means that if you had taken regular MACRS depreciation, you would have only gotten a $4,000 deduction in year one. Since you took the entire $20,000 in one shot, you have to recapture the $16,000 that you took that you were not entitled to, since you converted to personal use. That figure is an approximation since you probably used it for business for some portion of 2021.
You can use this formula to check your own math. I also gave you a link to the phone support in one of those answers.
