To calculate the impact and ROI of your training program, you need to quantify the benefits and costs of your training program. The benefits are the positive changes that your training program has produced, such as improved performance, productivity, quality, customer satisfaction, retention, revenue, or profit. The costs are the negative or neutral expenses that your training program has incurred, such as materials, equipment, facilities, instructors, travel, time, or opportunity costs. You can use different methods and models to calculate the impact and ROI of your training program, such as the Kirkpatrick model, the Phillips model, the Brinkerhoff model, or the CIPP model. The most common formula to calculate the ROI is:
ROI = (Benefits - Costs) / Costs x 100%