# formatDelta

**Kind:** Function

**Source:** [`atloria-monorepo/apps/web/src/components/Analytics/charts/formatters.ts`](https://github.com/sherkety/atloria/blob/main/atloria-monorepo/apps/web/src/components/Analytics/charts/formatters.ts#L26)

## Signature

```ts
function formatDelta(current: number | null | undefined, previous: number | null | undefined): { text: string; direction: 'up' | 'down' | 'flat' }
```

## Parameters

| Name | Type |
|---|---|
| `current` | `number | null | undefined` |
| `previous` | `number | null | undefined` |

**Returns:** `{ text: string; direction: 'up' | 'down' | 'flat' }`