Percentages occur almost at every step. Discounted shares, the calculation of tax or other rates, various fractional and fractional ratios.
But the transfer of interest in a number is not so complicated.
The percentage is by definition the hundredth part of the number. Therefore, 100% is actually a unit, that is, the original number itself. Percentages, the value of which is less than 100, denote the proportion of the original number, more than 100 - the excess of the original number.
For convenience in use, interest is recordedUsually in the form of numbers from 1 to 100. Simply most often we come across values from this range. As with any number, interest also has tenths, hundredths and other shares.
Most often they are encountered when working with finances and other economic operations, as well as when presenting several quantities that make up parts of the whole.
Now we will deal directly with the translationPercent in number. This is not difficult at all. As mentioned above, 1% is a hundredths of a whole. The whole is a unit, then 1% = 0.01. Thus, to convert a percentage to a number, you need to divide this percentage by 100, or, in other words, move the comma in a given number by two characters to the left, that is, two orders of magnitude.
Functions for working with interest also existAlmost in any, even the simplest calculator, but as you can see, this operation is very simple and does not require any special efforts or knowledge in the field of mathematics. In fact, you need to remember a single formula. The fraction obtained as a result of this action will be decimal, and it, in turn, can be converted to ordinary, representing as significant digits of the decimal fraction, divided by 10 to an appropriate degree. Decimal fractions in general are very well perceived and recorded by ear, most likely it was the reason for using 10 in the second degree, that is, 100, as the basic unit of interest. Further, it can be simplified by dividing the numerator and denominator by their common multiplier. For example: 50% = 0.5 = 5/10 = 1/2.
Also the reverse action will be true (try to convert this example from right to left).