As economic growth slows down, households are re-evaluating their non-essential expenditures. Premium subscription-based organic meal-prep kits, which provide portioned organic ingredients delivered directly to consumers' doors, have seen substantial volatility. While popular during periods of rising incomes, they face cutbacks when consumers look to save money by purchasing standard ingredients at discount supermarkets.
Recent market data shows that average annual household disposable income in the region has decreased by 7.5% over the past year. Consequently, the regional sales of these organic meal-prep kits are projected to fall from 80,000 to 62,000 units annually.
Using the data in Extract B, explain the likely numerical value for the income elasticity of demand for premium organic meal-prep subscription kits.