fix: NaN deltas

src/app/tools/compare/page.tsx

@@ -214,6 +214,11 @@ export default function Page() {
           const normalizedDeltaPercentage = Math.round(
             Math.min(100, Math.abs(deltaPercentage) * 2 * 100 + 25),
           );
+          const resolvedDisplayValue = display
+            ? display(stats[index])
+            : decimals === undefined
+              ? value
+              : value?.toFixed(decimals);
 
           return (
             <Table.Cell
@@ -244,14 +249,12 @@ export default function Page() {
                 }}
               >
                 <Text style={{ textAlign: 'center' }} wrap="nowrap">
-                  {display
+                  {resolvedDisplayValue}
-                    ? display(stats[index])
-                    : decimals === undefined
-                      ? value
-                      : value?.toFixed(decimals)}
                 </Text>
 
-                {delta !== 0 && (
+                {delta !== 0 &&
+                  resolvedDisplayValue !== undefined &&
+                  values[0] !== undefined && (
                     <>
                       {deltaMode === 'absolute' && (
                         <Text color="gray">