public int getResultPercentage() {
        long total = targetActive;
        if (docs < total) {
            return (int) Math.round(docs * 100.0d / total);
        }
        if ((total == 0) && isDegradedByTimeout()) {
            return 0;
        }
        return 100;
    }
An int between 0 (inclusive) and 100 (inclusive) representing how many
percent coverage the result sets this Coverage instance contains information
about had.
container-core/src/main/java/com/yahoo/container/logging/Coverage.java