-5.1% is the change from 1000 to 949
Calculation steps:
[( 949 - 1000 ) ÷ 1000] x 100 = -5.1%
Formula
Percentage change = [(949 - 1000) / 1000] x 100
Subtract the new number by the original number
949 - 1000 = -51
-51 ÷ 1000 = -0.051
-0.051 x 100 = -5.1%