28.00 increased by 78% is 49.84

The increase is 21.84

This calculator is intended solely for general information and educational purposes. You should not take any action on the basis of the information provided through this calculator.

A quick way to increase a number by a percentage, is to find the percent of your number, and add it to your number.

So, suppose Jerry got a hot stock tip from a friend about some kind of robot butcher. Jerry bought the stock for $10 and it went up 37%. How much is Jerry's stock worth?

- To get the answer, convert 37% to a decimal, which is .37 . You can find this on your calculator by typing 37 and hitting "%".
- Now multiply .37 * 10, which is 3.70
- Now add 3.70 to 10, and you get 13.70 which is your answer.

You could also solve this problem by multiplying 10 * 1.37, which also gives you $13.70

If Jerry did this trick he could have saved a lot of time, and had an easy summmer. "The Summer of Jerry!"