Cook Islands is about 1,011 times smaller than Ghana.

Ghana is approximately 238,533 sq km, while Cook Islands is approximately 236 sq km, making Cook Islands 0.1% the size of Ghana. Meanwhile, the population of Ghana is ~33.1 million people (33.1 million fewer people live in Cook Islands).
Tip: This to-scale comparison of Ghana vs. Cook Islands uses the Mercator projection, which distorts the size of regions near the poles.