# Subtraction Assignment Operator (-=)

Subtracts the value of an expression from the value of a variable and assigns the result to the variable.

*result* **-=** *expression*

#### Arguments

*result*
- Any numeric variable.
*expression*
- Any numeric expression.

#### Remarks

Using the **-=** operator is exactly the same as doing the following:

result = result – expression

#### Requirements

Version 1

#### See Also

- Operator | Operator Precedence | Operator Summary