-3.9% is the change from 1000 to 961
Calculation steps:
[( 961 - 1000 ) ÷ 1000] x 100 = -3.9%
Formula
Percentage change = [(961 - 1000) / 1000] x 100
Subtract the new number by the original number
961 - 1000 = -39
-39 ÷ 1000 = -0.039
-0.039 x 100 = -3.9%