What is the meaning of the expression…
PART OF THE WAY THROUGH?
used to describe what fraction (or percentage) of something is complete
1. I am two-thirds of the way through my book.
2. He is three-quarters of the way through his research project.
3. I am one-half of the way through my university degree.
4. He is halfway through his dinner.
Notice the difference in structure when you use halfway versus other amounts.