-29.68% is the change from 950 to 668
Calculation steps:
[( 668 - 950 ) ÷ 950] x 100 = -29.68%
Formula
Percentage change = [(668 - 950) / 950] x 100
Subtract the new number by the original number
668 - 950 = -282
-282 ÷ 950 = -0.2968421052631579
-0.2968421052631579 x 100 = -29.68%