-52.1% is the change from 1000 to 479
Calculation steps:
[( 479 - 1000 ) ÷ 1000] x 100 = -52.1%
Formula
Percentage change = [(479 - 1000) / 1000] x 100
Subtract the new number by the original number
479 - 1000 = -521
-521 ÷ 1000 = -0.521
-0.521 x 100 = -52.1%