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toPercentage(mixed $number, int $precision = 2)

Like precision(), this method formats a number according to the supplied precision (where numbers are rounded to meet the given precision). This method also expresses the number as a percentage and prepends the output with a percent sign.

<?php echo $number->toPercentage(45.691873645); ?>
 
//Outputs: 
45.69%

1. <?php echo $number->toPercentage(45.691873645); ?>
3. //Outputs:
4. 45.69%