Question

How to calculate the percent:
Business organizations
(Sole proprietorships
Partnerships
Corporations)
Number (thousands), percent of total
17,409, percent of total?
1,855, percent of total ?
4,849, pecent of total ?
Reciepts (billions), Percent in total
918, percent of total?
1,534, percent of total?
16,543, percent of total?
I do not understand how to calculate the percent, help indeed please thank you!