I have a mountain biking school. I purchased a bike for business use, but aIso use it for personal, recreational riding. How do I calculate (CCA) for only business use?

For example, I bought a new bike in Feb. 2022. I use it for coaching and group ride and instruction, but also for recreational riding. The split is about  50/50. Can do I calculate the amount to be claimed for business use? I know this will be CCA, but not sure how to know the percentage of the total cost to claim. Want to make sure I'm doing the right thing.