What is the percent of change? 4/5 to 3/5 increase or decrease? round to the nearest tenth of a percent if necessary.

4/5 is larger than 3/5, if the amount is getting smaller it is a decrease.
Because it is a decrease, you must subtract the orginal number from the new number and divide by the orginal. 4/5-3/5=1/5 1/5÷4/5= 1/4
1/4=.25
The percent of change is 25%