-38.88% is the change from 800 to 489
Calculation steps:
[( 489 - 800 ) ÷ 800] x 100 = -38.88%
Formula
Percentage change = [(489 - 800) / 800] x 100
Subtract the new number by the original number
489 - 800 = -311
-311 ÷ 800 = -0.38875
-0.38875 x 100 = -38.88%