Do you suffer from epilepsy? Percentages of macronutrient are important when treating epilepsy. For weight loss percentages play no role at all; use grams instead of percentages.
Read those two books, and read it all, from the first to the last page, from A to Z; all questions you may have regarding ketogenic diet that isn't specifically formulated for epilepsy are answered and explained:
1.) This is the book that contains just the basic informations of ketogenic diet and answers all of your question stated here. There is one printing typo in the book, but it's very easy to spot so it's not critical.
2.) This book goes into a lot greater detail, explainint and answering tons of questions that are regularly keep poppin up in keto related subreddits and other forums.