-48.3% is the change from 1000 to 517
Calculation steps:
[( 517 - 1000 ) ÷ 1000] x 100 = -48.3%
Formula
Percentage change = [(517 - 1000) / 1000] x 100
Subtract the new number by the original number
517 - 1000 = -483
-483 ÷ 1000 = -0.483
-0.483 x 100 = -48.3%