/**
* Formats a number into the correct locale format to show deltas (signed differences in value).
*
* ### Options
*
* - `places` - Minimum number or decimals to use, e.g 0
* - `precision` - Maximum Number of decimal places to use, e.g. 2
* - `locale` - The locale name to use for formatting the number, e.g. fr_FR
* - `before` - The string to place before whole numbers, e.g. '['
* - `after` - The string to place after decimal numbers, e.g. ']'
* - `escape` - Set to false to prevent escaping
*
* @param float $value A floating point number
* @param array $options Options list.
* @return string formatted delta
*/
public function formatDelta($value, array $options = [])
{
$formatted = $this->_engine->formatDelta($value, $options);
$options += ['escape' => true];
return $options['escape'] ? h($formatted) : $formatted;
}
