The percentage of investment allocation in forex trading industries depends on individual risk tolerance, trading strategy, and financial goals. Generally, it is recommended to diversify investments across different asset classes, including forex, stocks, bonds, and commodities. A common rule of thumb is to allocate no more than 2-5% of the total investment capital to any single trade. This helps manage risk and prevents significant losses in case of unfavorable market movements. It's also important to consider leverage when determining investment allocation, as higher leverage increases both profit potential and risk. Traders should carefully assess their financial situation, set realistic goals, and determine the appropriate percentage allocation that aligns with their risk appetite and investment objectives. Regular monitoring and adjustments to the allocation may be necessary as market conditions and personal circumstances change.