-98.8% is the change from 1000 to 12
Calculation steps:
[( 12 - 1000 ) ÷ 1000] x 100 = -98.8%
Formula
Percentage change = [(12 - 1000) / 1000] x 100
Subtract the new number by the original number
12 - 1000 = -988
-988 ÷ 1000 = -0.988
-0.988 x 100 = -98.8%