-13.7% is the change from 1000 to 863
Calculation steps:
[( 863 - 1000 ) ÷ 1000] x 100 = -13.7%
Formula
Percentage change = [(863 - 1000) / 1000] x 100
Subtract the new number by the original number
863 - 1000 = -137
-137 ÷ 1000 = -0.137
-0.137 x 100 = -13.7%