-29.5% is the change from 949 to 669
Calculation steps:
[( 669 - 949 ) ÷ 949] x 100 = -29.5%
Formula
Percentage change = [(669 - 949) / 949] x 100
Subtract the new number by the original number
669 - 949 = -280
-280 ÷ 949 = -0.2950474183350896
-0.2950474183350896 x 100 = -29.5%