# Percentages in everyday life

Percents.  Means “per 100”.  Percents can be written as fractions by placing the number over 100 and simplifying.

Percents.   Percents can be written as decimals (1) moving the
decimal point 2 places to the left, and (2) deleting the percent sign.
X*10%=15

X=15/10% = 15/0.10=150
Percent of change

Percentage change between two numbers A & B can be calculated
as:
(B-A)/A * 100

For example, if a game price increases in value from \$10 to \$12
the percentage increase is:

(12-10)/10 * 100 = 2/10 *100 = 0.2*100 = 20 percent

Alternatively, if a game price decreases in value from \$10 to \$9 the
percentage decrease is:

(10-9)/10 * 100 = 0.1*100 = 10 percent

Convert Fractions, Decimals, Percents

Move the decimal point twice to the right
Move the decimal point twice to the left,
delete the percent sign
Write down the decimal divided by 1
Multiply its numerator and denominator
by the same  number (10, 100, 1000, ..)
Simplify if necessary

To convert a decimal to a percent, multiply the decimal by 100,  then add the % symbol.

## Interest

### PE12Tips Convert Decimals, Fractions And Percent (Help)

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Percent (Help)

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