Account and market growth percentages are values that account managers can enter to indicate the expected growth of their account and the market for their products in the upcoming period. These values are used in the forecast formula to calculate the forecast quantity and revenue for future periods. The new values are used in forecasting the future periods only when the account and market growth percentages are part of the forecast formula. If the forecast formula does not include these values, then editing them will not affect the forecast calculation. References: Create Accurate Account Forecasts, Configure Forecast Metrics and Formulas