perf: 优化财务数字格式化函数

leopard-web/src/pages/stock/StockDetail.tsx

@@ -5,13 +5,23 @@ import type {Schema} from 'amis'
 
 // 格式化财务数字显示的公共函数
 const formatFinanceNumber = (value: number): string => {
-  if (value >= 100000000) {
-    return (value / 100000000).toFixed(2) + '亿'
-  } else if (value >= 10000) {
-    return (value / 10000).toFixed(2) + '万'
-  } else {
-    return value.toLocaleString()
+  if (value === null || value === undefined) {
+    return '-'
   }
+
+  const isNegative = value < 0
+  const absoluteValue = Math.abs(value)
+
+  let formatted: string
+  if (absoluteValue >= 100000000) {
+    formatted = (absoluteValue / 100000000).toFixed(2) + '亿'
+  } else if (absoluteValue >= 10000) {
+    formatted = (absoluteValue / 10000).toFixed(2) + '万'
+  } else {
+    formatted = absoluteValue.toLocaleString()
+  }
+
+  return isNegative ? `-${formatted}` : formatted
 }
 
 const financePropertyLabel = (id: string | undefined, label: string, type: string, field: string): Schema => {