$50\%$ of $400$ is
.
To increase $400$ by $50\%$ we find
$\%$ of $400$.
$150\%$ of $400$ is
.
$25\%$ of $400$ is
.
To increase $400$ by $25\%$ we find
$\%$ of $400$.
$125\%$ of $400$ is
.
$1\%$ of $400$ is
.
To increase $400$ by $1\%$ we find
$\%$ of $400$.
$101\%$ of $400$ is
.
To increase $400$ by $100\%$ we find
$\%$ of $400$.
$200\%$ of $400$ is
.
Percentage Decrease
$100\%$ of $400$ is
.
$10\%$ of $400$ is
.
To decrease $400$ by $10\%$ we find
$\%$ of $400$.
$90\%$ of $400$ is
.
$25\%$ of $400$ is
.
To decrease $400$ by $25\%$ we find
$\%$ of $400$.
$75\%$ of $400$ is
.
$1\%$ of $400$ is
.
To decrease $400$ by $1\%$ we find
$\%$ of $400$.
$99\%$ of $400$ is
.
$70\%$ of $400$ is
.
To increase $400$ by $70\%$ we find
$\%$ of $400$.
$30\%$ of $400$ is
.
Multipliers
To increase or decrease a value by a certain percentage, what number must be multiplied?
For example:
To increase a value by $50\%$, we multiply by $1.5$.
To decrease a value by $10\%$, we multiply by $0.9$.