Switzerland is about 12 times smaller than Cameroon.

Cameroon is approximately 475,440 sq km, while Switzerland is approximately 41,277 sq km, making Switzerland 8.68% the size of Cameroon. Meanwhile, the population of Cameroon is ~29.3 million people (20.8 million fewer people live in Switzerland).
Tip: This to-scale comparison of Cameroon vs. Switzerland uses the Mercator projection, which distorts the size of regions near the poles.