The percentage

**increase**is found by dividing the**increase**by the starting number, then multiplying that result by 100%. Note: the percent**increase**measures FROM the first value. An**increase**from 50 of**25**is a change of 50% (**25**is the difference between the two numbers, and**25**is 50% of 50).Considering this, how do you calculate a 20% increase?

Multiply the original price by 0.2 to find the amount of a

**20**percent markup, or multiply it by 1.2 to find the total price (including markup). If you have the final price (including markup) and want to know what the original price was, divide by 1.2.Also to know, what is a 50% increase?

an

**increase**of**50**% means you still have your original value +**50**% more of that original value. the the original value is 6000, the a**50**%**increase**would be as follows: 6000+6000(. 5)=6000+3000=9000 (keep in mind that .What is the formula to calculate percentage increase?

To

Then: divide the **calculate**the**percentage increase**:**increase**by the original number and multiply the answer by 100. %

**increase**=

**Increase**÷ Original Number × 100. If your answer is a negative number then this is a

**percentage**decrease.

What is a 100 percent increase?

An

**increase**of**100**% in a quantity means that the final amount is 200% of the initial amount (**100**% of initial +**100**% of**increase**= 200% of initial); in other words, the quantity has doubled. An**increase**of 800% means the final amount is 9 times the original (**100**% + 800% = 900% = 9 times as large).