-41.3% is the change from 1000 to 587
Calculation steps:
[( 587 - 1000 ) ÷ 1000] x 100 = -41.3%
Formula
Percentage change = [(587 - 1000) / 1000] x 100
Subtract the new number by the original number
587 - 1000 = -413
-413 ÷ 1000 = -0.413
-0.413 x 100 = -41.3%