Losing 20 percent and then gaining 20 percent does not bring an account back to where it started. The percentages use different starting values. Understanding that small detail can change how you think about a drawdown.

Work through the base

In a hypothetical account, $10,000 falling by 20 percent becomes $8,000. A subsequent 20 percent gain adds $1,600, leaving $9,600. To return from $8,000 to $10,000 requires a $2,000 gain, which is 25 percent of $8,000.

The general recovery calculation is loss divided by one minus loss, with the loss expressed as a decimal. A 10 percent decline needs about 11.1 percent to recover; a 30 percent decline needs about 42.9 percent; a 50 percent decline needs 100 percent. These figures exclude deposits, withdrawals, costs, and taxes.

Do not turn the formula into a forecast

The arithmetic says how large a gain would restore the prior value. It does not say how likely that gain is, how long it will take, or which strategy could produce it. It also does not justify increasing exposure to reach the old balance faster.

A prior peak can become an emotional target even when it has little relevance to the next decision. Choosing a trade because it might erase an old loss substitutes an account-history goal for a fresh assessment of opportunity and risk.

Measure the experience as well as the depth

Record how long the drawdown lasts and what happened inside it. A brief decline and a prolonged period below the previous peak can create different financial and practical demands. If the account funds near-term obligations, the consequences can be especially important.

When evaluating a historical strategy record, ask whether it includes difficult periods, realistic execution, and costs. The largest loss observed in a sample is not necessarily the largest loss that could occur.

Make the next decision on current facts

A review can examine position concentration, leverage, execution errors, and whether the method still has support. It can also identify when you need qualified advice about the wider financial situation. A spreadsheet cannot resolve suitability.

For an exercise, choose a hypothetical starting balance and calculate the values after several gains and losses in sequence. Then add a withdrawal and notice how the result changes. Keep the exercise separate from a promised recovery schedule.

Our trading-plan framework is a place to document review rules. The purpose of recovery math is clearer expectations, not pressure to make the account whole by a deadline.

For structured education, explore Tackle Trading’s upcoming webinars and 15-day PRO trial. Trading Justice LLC and Tackle Trading LLC are separate businesses under common ownership.

General education, not individualized investment advice. Investing and trading involve risk. Options and leveraged products can involve substantial losses and obligations.