-5% is the change from 1000 to 950
Calculation steps:
[( 950 - 1000 ) ÷ 1000] x 100 = -5%
Formula
Percentage change = [(950 - 1000) / 1000] x 100
Subtract the new number by the original number
950 - 1000 = -50
-50 ÷ 1000 = -0.05
-0.05 x 100 = -5%
Example