Northern Mariana Islands is about 301 times smaller than Florida.

Florida is approximately 139,670 sq km, while Northern Mariana Islands is approximately 464 sq km, making Northern Mariana Islands 0.33% the size of Florida. Meanwhile, the population of Florida is ~18.8 million people (18.7 million fewer people live in Northern Mariana Islands).
Tip: This to-scale comparison of Florida vs. Northern Mariana Islands uses the Mercator projection, which distorts the size of regions near the poles.