diff --git a/history/src/app/history/index.types.d.ts b/history/src/app/history/index.types.d.ts
index aadbd73..24def67 100644
--- a/history/src/app/history/index.types.d.ts
+++ b/history/src/app/history/index.types.d.ts
@@ -2,7 +2,3 @@ type GetPriceHistoryArgs = {
   currency: string
   range?: string
 }
-
-type NotifyPriceChangeArgs = {
-  range?: PriceRange
-}
diff --git a/history/src/app/history/notify-price-change.ts b/history/src/app/history/notify-price-change.ts
index e150225..08973a2 100644
--- a/history/src/app/history/notify-price-change.ts
+++ b/history/src/app/history/notify-price-change.ts
@@ -4,14 +4,14 @@ import { checkedToCurrency } from "@domain/primitives"
 import { PriceRepository } from "@services/database"
 import { NotificationsService } from "@services/notifications"
 
-export const notifyPriceChange = async ({ range }: NotifyPriceChangeArgs) => {
+export const notifyPriceChange = async () => {
   const quote = checkedToCurrency("USD")
 
   if (quote instanceof Error) {
     return quote
   }
 
-  const rangeToQuery = range || PriceRange.OneDay
+  const rangeToQuery = PriceRange.OneDay
   const prices = await PriceRepository().listPrices({
     base: defaultBaseCurrency,
     quote,
diff --git a/history/src/config/process.ts b/history/src/config/process.ts
index c432d6c..7c21b42 100644
--- a/history/src/config/process.ts
+++ b/history/src/config/process.ts
@@ -13,4 +13,5 @@ export const databaseConfig = {
   debug: process.env.DB_DEBUG === "true",
 }
 
-export const notificationsEndpoint = process.env.notificationsEndpoint || "localhost:6685"
+export const notificationsEndpoint =
+  process.env.NOTIFICATIONS_ENDPOINT || "localhost:6685"
diff --git a/history/src/services/notifications/price-changed-event.ts b/history/src/services/notifications/price-changed-event.ts
index 4c8c51f..ffa9f76 100644
--- a/history/src/services/notifications/price-changed-event.ts
+++ b/history/src/services/notifications/price-changed-event.ts
@@ -20,7 +20,7 @@ export const createPriceChangedEvent = ({
 const usdMajorUnitToMinorUnit = (usd: number) => usd * 100
 
 const calculatePriceChangePercentage = (initialPrice: Price, finalPrice: Price) => {
-  const percentage = ((finalPrice - initialPrice) / initialPrice) * 100
+  const percentage = Math.abs(((finalPrice - initialPrice) / initialPrice) * 100)
 
   const direction =
     finalPrice > initialPrice ? PriceChangeDirection.UP : PriceChangeDirection.DOWN