openwrt-packages-dist/utils/collectd/patches/920-fix-ping-droprate.patch

--- a/src/ping.c
+++ b/src/ping.c
@@ -651,7 +651,7 @@ static int ping_read (void) /* {{{ */
           / ((double) (pkg_recv * (pkg_recv - 1))));
 
     /* Calculate drop rate. */
-    droprate = ((double) (pkg_sent - pkg_recv)) / ((double) pkg_sent);
+    droprate = ((double) (pkg_sent - pkg_recv)) * 100 / ((double) pkg_sent);
 
     submit (hl->host, "ping", latency_average);
     submit (hl->host, "ping_stddev", latency_stddev);