{"uid":"cap_ZJOoydOIYmg7meRZfYrRn","slug":"pennyrail-percent-change-growth-percent-calculator-686aa293","name":"PennyRail Percent Change / Growth Percent Calculator","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/p/nano/number.percent-change--growth-percent?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"object"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_e63B4LT350ugRYI2eIA44","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the percent change (growth percent) between two numeric values via a paid API call","exampleAgentPrompt":"Calculate the percent change from 200 to 350 for me — I need to know the growth percentage between those two numbers.","exampleUseCases":[{"title":"Monthly Revenue Growth Tracking","prompt":"My revenue went from $84,000 last month to $102,000 this month — what's the percent change so I can report it to the team?"},{"title":"Portfolio Return Calculation","prompt":"My stock position was worth $4,250 when I bought it and it's now worth $5,100 — can you calculate the growth percent for me?"},{"title":"Website Traffic Change Reporting","prompt":"Last week we had 12,400 visitors and this week we have 9,800 — what's the percent change so I can include it in my weekly report?"}],"resultDescription":"Returns a numeric percent change (growth percent) value computed from the provided input numbers, packaged as a JSON object with arbitrary additional properties depending on the service's response structure.","failureModes":["Missing or malformed input object returns a validation error","Non-numeric input values may cause computation failure","Insufficient USDC balance or failed x402 payment results in 402 Payment Required","Starting value of zero causes division-by-zero error","Network timeout on the Vercel serverless function"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-use percent change or growth percent calculation without standing up your own math infrastructure, especially in an agent workflow that already uses x402 micropayment rails and needs a simple numeric transformation step.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-04T11:26:15.162Z","isFirstParty":false,"canonicalSlug":"pennyrail-percent-change-growth-percent-calculator-686aa293"}