public static <T> String withPercentage(final T value, final T total) {
        return withPercentage(value, value, total);
    }
Output the value with its percentage of {@code total}, e.g. {@code 1000 (10%)}.
Supports numbers and {@link Duration} and {@link DurationAdder}.
stroom-util/src/main/java/stroom/util/logging/LogUtil.java