-0.11% is the change from 950 to 949
Calculation steps:
[( 949 - 950 ) ÷ 950] x 100 = -0.11%
Formula
Percentage change = [(949 - 950) / 950] x 100
Subtract the new number by the original number
949 - 950 = -1
-1 ÷ 950 = -0.0010526315789473684
-0.0010526315789473684 x 100 = -0.11%