The difference that you can see between an observed value and an expected value of a variable. 2. In this industry, deviations are when an organisation's expenses, such as revenue or labour, differ from its budget. 3. This rate is a percentage you get of the space to the total amount of available space. 4. A deviation that affects quality, a crucial process parameter, an instrument essential to process or control, the consequences of which can significantly impact the organisation. 5. This process should be followed while reporting a major deviation