Lombardy is one region in Italy...it is about 16% of Italy's population but has 39% of the cases and 56% of the deaths in Italy from early reports. It has a 33% positive test rate compared to 18.4% across the country for Italy.
Using current CDC data the US has 331,000 cases approximately. Of those cases 119,000 are in New York, 37,500 are in New Jersey (rounded on both). That is 47% of the US cases in one region. Of the approximate 11,000 deaths, 5,500 are in New York and 1,000 in New Jersey, 59% of deaths in the US are in one region.
Combine the two and we have 51,500 in the Lombardy region, 156,500 in the New York/New Jersey region for a total of 208.000 cases out of the 1.3 million worldwide (minus China who's numbers are BS). Death wise we have 9,200 in the Lombardy region and 6,500 in New York/New Jersey for a total of 15,700 out of 75,000 deaths worldwide (again minus China).
So 16% of the cases and 21% of worldwide deaths out of 0.6% of the worlds population. (Around 10 million in Lombardy, 19.5 million in New York and 9 million in New Jersey, for a total of 38.5 million out of 6.4 billion outside of China)