The cache percentage of the domain name will drop sharply

The cache percentage of the domain name will drop sharply

Could you provide more information? You can read more on what to include in your post at Community Tip - What to include in your post?

You can check out Cache Overview (if you are on Paid Plan) to see more Analytics on it.

Another thing is please read more about Cloudflare’s Default Cache Behavior to understand more on what will be cached and what will not.

As well as Edge and Browser Cache TTL · Cloudflare Cache (CDN) docs to set up some rules to improve your cache ratio.