-14.2% is the change from 1000 to 858
Calculation steps:
[( 858 - 1000 ) ÷ 1000] x 100 = -14.2%
Formula
Percentage change = [(858 - 1000) / 1000] x 100
Subtract the new number by the original number
858 - 1000 = -142
-142 ÷ 1000 = -0.142
-0.142 x 100 = -14.2%