fix(ui): Fixed point on change percentage in graph tooltips (#29743)

static/app/views/alerts/incidentRules/triggers/chart/thresholdsChart.tsx

@@ -412,7 +412,7 @@ export default class ThresholdsChart extends PureComponent<Props, State> {
           }${
             Math.abs(changePercentage) === Infinity
               ? `&#8734`
-              : Math.abs(changePercentage)
+              : Math.abs(changePercentage).toFixed(2)
           }%</span></span>`;
         },
       },

static/app/views/alerts/rules/details/metricChart.tsx

@@ -687,7 +687,7 @@ class MetricChart extends React.PureComponent<Props, State> {
                             }${
                               Math.abs(changePercentage) === Infinity
                                 ? `&#8734`
-                                : Math.abs(changePercentage)
+                                : Math.abs(changePercentage).toFixed(2)
                             }%</span>`,
                           `</div>`,
                           `<div class="tooltip-arrow"></div>`,