Depreciation of Business Asset (Car) Allocation to LLC (Limo Service) and/or Contractor (Uber/Lyft) Work

If I use a car for limo service part of the time and as a contractor for Lyft and Uber how should I allocate the depreciation expense for deduction?  Should I use the percentage used for business and contracting as a divisional allocation or claim the deduction 100% from one or the other?  I was going to combine the business and contracting work both on personal taxes rather than seprate the business tax.