If your calculator does not have a percent key and you want to add a percentage to a number multiply that number by 1 plus the percentage fraction. For example 25000+9% = 25000 x 1.09 = 27250. To subtract 9 percent multiply the number by 1 minus the percentage fraction. Example: 25000 - 9% = 25000 x 0.91 = 22750.
How can VAT be calculated?
VAT-inclusive prices. To work out a price including the standard rate of VAT (20%), multiply the price excluding VAT by 1.2. To work out a price including the reduced rate of VAT (5%), multiply the price excluding VAT by 1.05.
How do you subtract 20% from a price?
To subtract any percentage from a number, simply multiply that number by the percentage minus 100. To divide by 20 percent, multiply by 80 percent. To divide by 30 percent, multiply the number by 70 percent. Before beginning, determine the gross amount you want to use before subtracting a percentage.