Move the decimal place over two places to the right, and replace the decimal into a percent. (.42 = 42%) either that or you see how many times the numerator goes in to one hundred & then that's it...
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You can put the percent number over 100 and multiply it by the number you want to decrease, like 9% decrease from 100 would be 9/100 times 100... If you have a calculator, you can move the decimal place over to the right twice, and mulitply. So 9% would be 0.09.
1 over 2 = 0.5 as a decimal and 50% as a percent
You multiply the decimal by 100 and put the "%" sign behind it. For example 0.16 would be 16% (0.16 X 100).or move the decimal over 2 places.Simple!! Just take your decimal lets say its 5.84 and move the decimal point over two your percent is 584%.Lets say its 6.2 then your percent would be 620%.Hope this helps:)
Think of it this way. Any number as a percent, move the decimal point back two spaces and take away the percent. So, 4% would be .04 as a decimal, get it? Now, put 4 over 100 as a fraction and reduce. You will end up 2 over 50 as a fraction. Reduce again and you get the final fraction of 1 over 25.
0.7525. All you have to do when turning a percent into a decimal is move over the decimal two digits to the left.