-84.88% is the change from 529 to 80
Calculation steps:
[( 80 - 529 ) ÷ 529] x 100 = -84.88%
Formula
Percentage change = [(80 - 529) / 529] x 100
Subtract the new number by the original number
80 - 529 = -449
-449 ÷ 529 = -0.8487712665406427
-0.8487712665406427 x 100 = -84.88%