-15.9% is the change from 1000 to 841
Calculation steps:
[( 841 - 1000 ) ÷ 1000] x 100 = -15.9%
Formula
Percentage change = [(841 - 1000) / 1000] x 100
Subtract the new number by the original number
841 - 1000 = -159
-159 ÷ 1000 = -0.159
-0.159 x 100 = -15.9%