-7.58% is the change from 528 to 488
Calculation steps:
[( 488 - 528 ) ÷ 528] x 100 = -7.58%
Formula
Percentage change = [(488 - 528) / 528] x 100
Subtract the new number by the original number
488 - 528 = -40
-40 ÷ 528 = -0.07575757575757576
-0.07575757575757576 x 100 = -7.58%