Label percentages (2.5%, 50%, etc)

## Usage

```
label_percent(
accuracy = NULL,
scale = 100,
prefix = "",
suffix = "%",
big.mark = " ",
decimal.mark = ".",
trim = TRUE,
...
)
```

## Arguments

- accuracy
A number to round to. Use (e.g.)

`0.01`

to show 2 decimal places of precision. If`NULL`

, the default, uses a heuristic that should ensure breaks have the minimum number of digits needed to show the difference between adjacent values.Applied to rescaled data.

- scale
A scaling factor:

`x`

will be multiplied by`scale`

before formatting. This is useful if the underlying data is very small or very large.- prefix
Additional text to display before the number. The suffix is applied to absolute value before

`style_positive`

and`style_negative`

are processed so that`prefix = "$"`

will yield (e.g.)`-$1`

and`($1)`

.- suffix
Additional text to display after the number.

- big.mark
Character used between every 3 digits to separate thousands.

- decimal.mark
The character to be used to indicate the numeric decimal point.

- trim
Logical, if

`FALSE`

, values are right-justified to a common width (see`base::format()`

).- ...
Other arguments passed on to

`base::format()`

.

## Value

All `label_()`

functions return a "labelling" function, i.e. a function that
takes a vector `x`

and returns a character vector of `length(x)`

giving a
label for each input value.

Labelling functions are designed to be used with the `labels`

argument of
ggplot2 scales. The examples demonstrate their use with x scales, but
they work similarly for all scales, including those that generate legends
rather than axes.

## See also

Other labels for continuous scales:
`label_bytes()`

,
`label_dollar()`

,
`label_number_auto()`

,
`label_number_si()`

,
`label_ordinal()`

,
`label_parse()`

,
`label_pvalue()`

,
`label_scientific()`

## Examples

```
demo_continuous(c(0, 1))
#> scale_x_continuous()
demo_continuous(c(0, 1), labels = label_percent())
#> scale_x_continuous(labels = label_percent())
# Use prefix and suffix to create your own variants
french_percent <- label_percent(
decimal.mark = ",",
suffix = " %"
)
demo_continuous(c(0, .01), labels = french_percent)
#> scale_x_continuous(labels = french_percent)
```