diff --git a/templates/modals/full_calc.html b/templates/modals/full_calc.html
index ae4df1b..ef1952e 100644
--- a/templates/modals/full_calc.html
+++ b/templates/modals/full_calc.html
@@ -169,10 +169,13 @@
                 oppAvgScore.innerText = oppAvg.toFixed(2);
             if (!isNaN(homeAvg) && !isNaN(oppAvg)) {
                 const diff = (((homeAvg / oppAvg) - 1.0) * 100).toFixed(1);
-                if (diff > 0)
-                    diffScore.classList.replace('text-warning', 'text-success');
-                else if (diff < 0)
-                    diffScore.classList.replace('text-warning', 'text-danger');
+                diffScore.classList.remove('text-warning');
+                diffScore.classList.remove('text-success');
+                diffScore.classList.remove('text-danger');
+                if (diff > 0.0)
+                    diffScore.classList.add('text-success');
+                else if (diff < 0.0)
+                    diffScore.classList.add('text-danger');
                 diffScore.innerText = diff + "%";
             }