Answer:
Corporations comprise about 20% of all businesses but account for about 81% of u.s. business receipts.
Explanation:
A corporation is kind of a business that is set up by a legal organization headed by a person or several partners together. Examples including Microsoft, Apple Inc. etc
While corporations make up just 20% of registered businesses, they are usually quite larger and have national foot print. They can employ thousands of people, have a number of subsidiary companies and work with hundreds of smaller businesses.
Hence, while they are smaller in number, their impact on the economy is very large.
