The best way to get the percentage on a calculator is to simply use our percentage calculator. However, if you do need to use a physical calculator, for some reason there are many ways to generate percentages. If your calculator has a percentage,%. If you have a button, you can add or subtract by adding a percentage sign in each appropriate field. နုတ်၊ for example, if you want to increase 10 by 50%, just write 10 + 50% to get 15% of the answer. However, if your calculator doesn't have a percentage button, then you'll need to follow the questions above in solving each case. 10 + 50% = 10 + 10 * 50/100 = 10 + 5 = 15: The previous example is calculated as follows.