Percentage/Examples

Examples of Percentages

Example: $5 \%$

$5$ per cent is the same as $\dfrac 5 {100}$, or $\dfrac 1 {20}$.

Example: $20 \%$

$20$ per cent is the same as $0.2$ or $\dfrac 1 5$.

Example: $25 \%$

$25$ per cent is the same as $\dfrac 1 4$.

Example: $50 \%$

$\dfrac 1 2$ can be expressed in percentage form as:

$\dfrac 1 2 \times 100 = 50 \%$

Example: $120 \%$

$1.2$ can be expressed in percentage form as:

$1.2 \times 100 = 120 \%$

Example: $b - a$ as a Percentage

A change in a quantity from $a$ to $b$ can be expressed as a percentage as:

$\dfrac {100 \paren {b - a} } a \%$