Final answer:
The percentage of in-house points one can earn in recertification programs varies and is set by the certifying authority of the specific professional field.
Step-by-step explanation:
The specific percentage of in-house points one can earn in recertification programs highly depends on the program's specifications and governing body or institution's guidelines. Typically, professional certifications and recertifications are regulated by professional boards or organizations that set the criteria, including the maximum amount of in-house points that can be accumulated for activities conducted within an organization as part of continuous professional development. To find the exact percentage, one should refer to the guidelines provided by the specific certification authority for the recertification process in their respective field.