---
title: "-(_:_:)"
framework: foundation
role: symbol
role_heading: Operator
path: "foundation/decimal/-(_:_:)"
---

# -(_:_:)

Subtracts one decimal number from another.

## Declaration

```swift
static func - (lhs: Decimal, rhs: Decimal) -> Decimal
```

## Parameters

- `lhs`: The value to subtract from.
- `rhs`: The value to subtract.

## Return Value

Return Value The result of subtracting rhs from lhs.

## Discussion

Discussion If the result of this operation requires more precision than the Decimal type can provide, the result is rounded using the NSDecimalNumber.RoundingMode.plain rounding mode. To specify a different rounding mode, use the NSDecimalSubtract(_:_:_:_:) function instead.