Question

why we change the numbers to currency format and how we apply it​

Answer 1

Explanation:

If you want to display numbers as monetary values, you must format those numbers as currency. To do this, you apply either the Currency or Accounting number format to the cells that you want to format. The number formatting options are available on the Home tab, in the Number group.

Answer 2

If you want to display numbers as monetary values, you must format these numbers as currency. To this you apply, either the currency or Accounting number format to the cells that you want to format. the number formatting options are available on the home tab, in the number group.