-1.9% is the change from 1000 to 981
Calculation steps:
[( 981 - 1000 ) ÷ 1000] x 100 = -1.9%
Formula
Percentage change = [(981 - 1000) / 1000] x 100
Subtract the new number by the original number
981 - 1000 = -19
-19 ÷ 1000 = -0.019
-0.019 x 100 = -1.9%