diff --git a/common/util/format.ts b/common/util/format.ts
index 05a8f702..7f352cf2 100644
--- a/common/util/format.ts
+++ b/common/util/format.ts
@@ -18,10 +18,20 @@ export function formatWithCommas(amount: number) {
   return formatter.format(amount).replace('$', '')
 }
 
-export function formatPercent(zeroToOne: number) {
-  // Show 1 decimal place if <2% or >98%, giving more resolution on the tails
-  const decimalPlaces = zeroToOne < 0.02 || zeroToOne > 0.98 ? 1 : 0
-  return (zeroToOne * 100).toFixed(decimalPlaces) + '%'
+const decimalPlaces = (x: number) => Math.ceil(-Math.log10(x)) - 2
+
+export function formatPercent(decimalPercent: number) {
+  const displayedFigs =
+    (decimalPercent >= 0.02 && decimalPercent <= 0.98) ||
+    decimalPercent <= 0 ||
+    decimalPercent >= 1
+      ? 0
+      : Math.max(
+          decimalPlaces(decimalPercent),
+          decimalPlaces(1 - decimalPercent)
+        )
+
+  return (decimalPercent * 100).toFixed(displayedFigs) + '%'
 }
 
 export function toCamelCase(words: string) {