-84.85% is the change from 528 to 80
Calculation steps:
[( 80 - 528 ) ÷ 528] x 100 = -84.85%
Formula
Percentage change = [(80 - 528) / 528] x 100
Subtract the new number by the original number
80 - 528 = -448
-448 ÷ 528 = -0.8484848484848485
-0.8484848484848485 x 100 = -84.85%