Mali is about 10 times bigger than New York.

New York is approximately 122,283 sq km, while Mali is approximately 1,240,192 sq km, making Mali 914% larger than New York. Meanwhile, the population of New York is ~19.4 million people (1.4 million more people live in Mali).
Tip: This to-scale comparison of New York vs. Mali uses the Mercator projection, which distorts the size of regions near the poles.