fix: Progress calculation (#799)

      if [ -z "$total" ] || [[ "$total" == "0" ]]; then

        size=$(numfmt --to=iec --suffix=B  "$bytes" | sed -r 's/([A-Z])/ \1/')

      else

        size=$(printf '%.1f\n' "$((bytes*100*100/total))e-2")

        size="$(echo "$bytes" "$total" | awk '{printf "%.1f", $1 * 100 / $2}')"

        size="$size%"

      fi

      echo "${body//(\[P\])/($size)}"> "$info"