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Deep Dive

The FormatPercent function returns an expression formatted as a percentage (multiplied by 100) with a trailing % sign.

FormatPercent(Expression[,NumDigAfterDec[,
IncLeadingDig[,UseParForNegNum[,GroupDig]]]])

Parameter	Description
expression	Required. The expression to be formatted.
NumDigAfterDec	Optional. A numeric value indicating how many digits to display to the right of the decimal point. Default is -1 (uses the computer's regional settings).
IncLeadingDig	Optional. Indicates whether to display a leading zero for fractional values: * -2 = TristateUseDefault - Uses the computer's regional settings * -1 = TristateTrue - True * 0 = TristateFalse - False
UseParForNegNum	Optional. Indicates whether to enclose negative numbers in parentheses: * -2 = TristateUseDefault - Uses the computer's regional settings * -1 = TristateTrue - True * 0 = TristateFalse - False
GroupDig	Optional. Indicates whether to group digits using the digit grouping symbol specified in the computer's regional settings: * -2 = TristateUseDefault - Uses the computer's regional settings * -1 = TristateTrue - True * 0 = TristateFalse - False

'How many percent is 6 of 345?

document.write(FormatPercent(6/345))

Output:

1.74%

'How many percent is 6 of 345?

document.write(FormatPercent(6/345,1))

Output:

1.7%