Final answer:
The specific percentage of Cameroon's land mass designated as a wildlife protection area is not provided in the information given.
Step-by-step explanation:
In Cameroon, the percentage of land mass designated as wildlife protection areas varies depending on the source. According to the IUCN World Parks Congress in 2003, approximately 11.5% of Earth's land surface was covered by various types of preserves. However, it should be noted that this percentage includes only 9 out of the 14 recognized major biomes. The specific percentage for Cameroon's wildlife protection areas is not explicitly stated in the provided information.