when I charge my phone, the battery percentage jumps to 23%

@muhammadfathir start off with a new battery. Should that not work, replace the charging board (daughter board). Since iFixit does not yet have a specific guide for that, use something like this video

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!