Bugfix/improve error handling in benchmark calculation (#1246)

* Improve error handling

* Update changelog

CHANGELOG.md

@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Upgraded `yahoo-finance2` from version `2.3.3` to `2.3.6`
 
+### Fixed
+
+- Improved the error handling in the benchmark calculation
+
 ## 1.191.0 - 10.09.2022
 
 ### Changed

apps/api/src/app/benchmark/benchmark.service.ts

@@ -31,7 +31,11 @@ export class BenchmarkService {
   ) {}
 
   public calculateChangeInPercentage(baseValue: number, currentValue: number) {
-    return new Big(currentValue).div(baseValue).minus(1).toNumber();
+    if (baseValue && currentValue) {
+      return new Big(currentValue).div(baseValue).minus(1).toNumber();
+    }
+
+    return 0;
   }
 
   public async getBenchmarks({ useCache = true } = {}): Promise<