# %%= operator

Source: https://ref.dm-lang.org/operator/modulomoduloequals
Added in BYOND 515.

### Format
> `A %25%25= B`

Set A equal to `A %% B`. It is shorthand for `A = A %25%25 B`.

`A %25%25 B` is read "A modulo B", which stands for the remainder of A divided by B. This version of the operator works with fractional values for A and B.

If A is a vector, it will be modified by this operation.

### See also
- [%% operator](https://ref.dm-lang.org/operator/modulomodulo.md)
- [operators](https://ref.dm-lang.org/operator/index.md)