If a $1,000 stock investment loses 80%, the account has $200 left. That is not just a large drop. Most of the original money is gone, and the recovery math changes sharply.
A common mistake is to think that an 80% loss needs an 80% gain to recover. But an 80% gain on $200 adds only $160. The account becomes $360, still far below the original $1,000.
If $1,000 falls by 80% to $200, the remaining money needs a 400% gain to return to the original principal. The $200 must become $1,000, which means it must grow fivefold.
| Loss | Remaining amount | Gain needed to recover |
|---|---|---|
| -10% | $900 | +11.11% |
| -30% | $700 | +42.86% |
| -50% | $500 | +100.00% |
| -80% | $200 | +400.00% |
| -90% | $100 | +900.00% |
A 50% loss needs a 100% gain because the remaining money must double. An 80% loss is much steeper. Only 20% of the original money remains, so the account needs to earn back the missing 80% from a much smaller base.
Why is it not +80%?
The loss is calculated from the original $1,000. An 80% loss removes $800.
The recovery gain is calculated from the remaining $200. To recover, the account needs to earn $800. That $800 gain is four times the remaining $200, so the required gain is 400%.
This is why deep losses are difficult to recover. After the loss, every percentage gain is applied to a smaller amount of money. The deeper the drawdown, the larger the recovery return must be.
This article is not a buy or sell recommendation for any stock. It is a simple recovery calculation. Real investment results can change because of additional losses, fees, taxes, holding periods, and volatility.