Many people don't know how to work out the percentage of things on a calculator. For example, if you want to find the percentage of your yearly salary, type in "0.0" for number 1 and "100.00" for number 2. Then press the square root key followed by the % button, so that you have "Percentage = 100%" displayed on your screen.
To find the percentage of a number, divide that number by 100 and then multiply by 100. For example, if you want to know what percentage of your monthly salary is $1000, divide $1000 by 100 to get 10%. Then multiply 10% by 100 to get 10%.
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