Joy weighed 80 kilograms last month. She is on a diet these days, and now she weighs 76 kilograms. What is the percent of change in Joy's weight?

To find the percent change in Joy's weight, we can use the formula for percent change, which is:
Percent Change = ( Initial Value Final Value − Initial Value ​ ) × 100
In this problem:

Initial Value is Joy's weight last month: 80 kilograms.
Final Value is Joy's current weight: 76 kilograms.

Let's plug these values into the formula:

Calculate the change in weight: Change in Weight = 76 − 80 = − 4 kilograms

Substitute into the percent change formula: Percent Change = ( 80 − 4 ​ ) × 100

Calculate the fraction: 80 − 4 ​ = − 0.05

Multiply by 100 to get the percent: − 0.05 × 100 = − 5%


The negative sign indicates a decrease in weight. Therefore, Joy's weight has decreased by 5%.

Answered by RyanHarmon181 | 2025-07-06