{"uid":"cap_0SE4GfdNLclVbdQQT_86H","slug":"one-engine-percent-change-calculator-9a6c442f","name":"ONE Engine Percent Change Calculator","description":"Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.","url":"https://one-search.one-engine.workers.dev/v1/number/percent-change?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"to":{"type":"number"},"from":{"type":"number"}}},"responseSchema":{"type":"json","example":{"percent_change":25}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0011","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.0011/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0011","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0011","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_IoJ28QDW480w29PyMu6eq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0011","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the percentage change between two numbers, returning the result as a numeric value.","exampleAgentPrompt":"What's the percent change from 80 to 100? I need the exact percentage increase as a number.","exampleUseCases":[{"title":"Stock price change tracker","prompt":"Calculate the percent change in stock price from $142.50 yesterday to $158.75 today — I need the exact percentage gain."},{"title":"Monthly revenue growth report","prompt":"My revenue was $45,000 last month and $52,000 this month. What's the percentage change between those two numbers?"},{"title":"Weight loss progress tracker","prompt":"I started at 210 pounds and now weigh 187 pounds. What's the percent change in my weight?"}],"resultDescription":"Returns a JSON object with a single field `percent_change` containing the numeric percentage change from the `from` value to the `to` value (e.g., {\"percent_change\": 25} for a 25% increase from 80 to 100).","failureModes":["Missing `from` or `to` fields returns an error or undefined behavior","Division by zero if `from` is 0 (no valid percent change baseline)","Non-numeric inputs may cause computation failure","Payment failure via x402 if insufficient USDC balance on Base"],"whenToPreferThis":"Use this endpoint when you need a quick, cheap, pay-per-call computation of percent change within an autonomous agent pipeline on Base using x402, avoiding the overhead of implementing the math locally or calling a heavier analytics API. Best when already integrated with the ONE Engine x402 payment flow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:43:49.323Z","isFirstParty":false,"canonicalSlug":"one-engine-percent-change-calculator-9a6c442f"}