---
id: 5d8a4cfbe6b6180ed9a1ca49
title: Part 106
challengeType: 0
dashedName: part-106
---
# --description--
Since you want to find what percent each of those `values` is, you first need to add them all up. `d3.sum` will do that for you. Create a new `const` named `sum` and set it equal to `d3.sum(values)`.
# --hints--
test-text
```js
assert(/const\s*sum\s*=\s*d3\s*\.\s*sum\s*\(\s*values\s*\)\s*;?/g.test(code));
```
# --seed--
## --before-user-code--
```html
D3 Dashboard
```
## --seed-contents--
```html
```
# --solutions--
```html
```