-0.42% is the change from 949 to 945
Calculation steps:
[( 945 - 949 ) ÷ 949] x 100 = -0.42%
Formula
Percentage change = [(945 - 949) / 949] x 100
Subtract the new number by the original number
945 - 949 = -4
-4 ÷ 949 = -0.004214963119072708
-0.004214963119072708 x 100 = -0.42%