Its a must have tool for answers and instruction.

Dont second guess the value of this little app. Theres 8 formulas here that should be thought of as indispensable to users who either watch their money or are interested is scrutinizing the suggestive value of a purchase or sales transaction. Its definitely worth a dollar to have the solutions at your fingertips along the ability to drill yourself on learning the formulas.

PDXCABBIE about Percentages - Percent Calculator, v1.81