diff --git a/src/services/consumption.service.ts b/src/services/consumption.service.ts
index e3b2b40701a6cfa63de4579e4aff33c25ae042cb..e929762966bd32633c7d305d806d4fda35464ad5 100644
--- a/src/services/consumption.service.ts
+++ b/src/services/consumption.service.ts
@@ -247,8 +247,8 @@ export default class ConsumptionDataManager {
   private calculatePerformanceIndicatorVariationPercentage(
     dataSum: number,
     comparisonDataSum: number
-  ): number {
-    return dataSum / comparisonDataSum - 1
+  ): number | null {
+    return comparisonDataSum !== 0 ? dataSum / comparisonDataSum - 1 : null
   }
 
   private async fetchSingleFluidGraphData(