Yes, price elasticity of demand is the change in demand for a 1% change in the price of a product. For producers the implications are the incentive to keep increasing the price of products when the products are inelastic because demand will not change a lot compared to the price increase. The implication on the consumer is the consumption of a product will not decrease by a lot when the price of an inelastic good increases, the consumer will spend a larger proportion of their budget on the product, reducing consumption of other products more than the inelastic product. And the reverse is true for elastic products where consumers buy more when the price falls, and the producers might produce less because the increase in profit from the increase in demand does not cover the fall in profit cause by the fall in price. There is more that could be said to explain the point where producers stop producing, the point where consumers consume, and the changing budget constraints for consumer, however, for GCSE economics I do not think that level of detail will be needed.