Percentage Calculator Pro

* This is the professional version of the application, and is entirely free of any advertising. • Easy to use interface allows the calculation of percentage changes. • Calculate both forward and reverse percentages. • A variety of practical uses, including calculating sales tax, from both the original price or the final selling price. • The calculator's colors are customizable. • User definable decimal marker (point or comma). • Optional thousands separator. Choose between space or comma/point(depends on decimal marker). • Variable precision up to 20 decimal places.