API Endpoint
Percentage Change
Calculate percentage change between two values.
Endpoint
POST https://likeoptions.com/api/v1/calculate/percentage
Also supports GET with query parameters.
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
original | number | — | Original value |
newValue | number | — | New value |
Request Examples
POST (JSON body)
curl -X POST https://likeoptions.com/api/v1/calculate/percentage \
-H "Content-Type: application/json" \
-d '{"original": 100000, "newValue": 50000}'GET (query parameters)
curl "https://likeoptions.com/api/v1/calculate/percentage?original=100000&newValue=50000"Response
{
"kind": "percentage",
"result": {
"primary": 1234.56,
"secondary": [
{ "label": "Example metric", "value": 100, "format": "money" },
{ "label": "Example percent", "value": 5.5, "format": "percent" }
]
}
}When to Use
- Calculate investment returns
- Measure price changes
- Compare year-over-year growth
Error Handling
- 400 Bad Request — Invalid input parameters or missing required fields
- 404 Not Found — Unknown calculator kind
- 429 Too Many Requests — Rate limit exceeded (120 req/hour per IP)
- 413 Payload Too Large — Request body exceeds 16 KB
Related Endpoints
View request examples in JavaScript, Python, cURL, and more →