-0.21% is the change from 951 to 949
Calculation steps:
[( 949 - 951 ) ÷ 951] x 100 = -0.21%
Formula
Percentage change = [(949 - 951) / 951] x 100
Subtract the new number by the original number
949 - 951 = -2
-2 ÷ 951 = -0.002103049421661409
-0.002103049421661409 x 100 = -0.21%