Feature/improve number formatting of y-axis in investment chart component (#5633)

* Improve number formatting of y-axis

* Update changelog

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Improved the number formatting of the y-axis labels in the investment chart component
 - Localized the number formatting of the y-axis labels in the line chart component
 - Improved the wording of the 4% rule in the _FIRE_ section
 - Improved the language localization for German (`de`)

libs/common/src/lib/chart-helper.ts

@@ -132,8 +132,10 @@ export function getVerticalHoverLinePlugin(
 }
 
 export function transformTickToAbbreviation(value: number) {
-  if (value >= -999 && value <= 999) {
-    return value.toString();
+  if (value === 0) {
+    return '0';
+  } else if (value >= -999 && value <= 999) {
+    return value.toFixed(2);
   } else if (value >= -999999 && value <= 999999) {
     return `${value / 1000}K`;
   } else {