Relative Change Calculator Relative difference formula. Reference value New value Relative change 0.2 Step-by-step with your numbers: 1. Values used: 2. Reference value = 50 3. New value = 60 4. Relative change = 0.2 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! (B − A) ÷ |A|. FAQ Vs percent change? Same — this gives the decimal form. Related calculators Percentage Change Calculator Find the percent increase or decrease between two values. Percentage Difference Calculator Find the percentage difference between two values. Percent Error Calculator Compare a measured value to the true value as a percentage error.