smart smartmontools - external storage 1

SSD smart

https://unix.stackexchange.com/questions/106678/how-to-check-the-life-left-in-ssd-or-the-mediums-wear-level

plextor

PX-G128M6e
241 (0xF1) Total_LBAs_Written -> 32MiB書込みごとに +1インクリメント
http://lab.mitty.jp/trac/lab/wiki/TipAndDoc/Hardware/Storage

samsung

177 Wear_Leveling_Count

Wear Leveling Count はの減り方は書き込み量と反比例で安定しており急激に死ぬことはない
Sumsung SSD 840 120GBを使い潰す(後編) - 人生シングルスレッド

crucial

202 Percentage Lifetime Used (202 Percent_Lifetime_Remain)

https://www.crucial.com/support/articles-faq-ssd/ssds-and-smart-data

INTEL

232 Available_Reservd_Space

232 Available_Reservd_Space 0x0033   100   100   010    Pre-fail  Always       -       0
233 Media_Wearout_Indicator 0x0032   099   099   000    Old_age   Always       -       0
E8 Available Reserved Space Normalized 予約領域の残っている数を表す。正規化した (Normalized) 値は、100 パーセントを表す 100 から始まる。正常の範囲は 10 パーセントまで。
E9 Media Wearout Indicator Normalized 記録メディアであるフラッシュメモリーの使い込んだ程度を表す。平均消去回数が増えるにつれ、正規化した (Normalized) 値が 100 から 1 へ減少していく。
http://www.nkjmkzk.net/?p=1380

In your first example, what I think you are referring to is the "Media Wearout Indicator" on Intel drives, which is attribute 233. Yes, it has a range of 0-100, with 100 being a brand new, unused drive, and 0 being completely worn out. According to your ouptut, this field doesn't seem to exist.
In your second example, please read the official docs about SSD_Life_Left. Per that page:
The RAW value of this attribute is always 0 and has no meaning. Check the normalized VALUE instead. It starts at 100 and indicates the approximate percentage of SDD life left. It typically decreases when Flash blocks are marked as bad, see the RAW value of Retired_Block_Count
hard disk - How to check the life left in SSD or the medium's wear level? - Unix & Linux Stack Exchange