-87.6% is the change from 1000 to 124
Calculation steps:
[( 124 - 1000 ) ÷ 1000] x 100 = -87.6%
Formula
Percentage change = [(124 - 1000) / 1000] x 100
Subtract the new number by the original number
124 - 1000 = -876
-876 ÷ 1000 = -0.876
-0.876 x 100 = -87.6%