-31.68% is the change from 950 to 649
Calculation steps:
[( 649 - 950 ) ÷ 950] x 100 = -31.68%
Formula
Percentage change = [(649 - 950) / 950] x 100
Subtract the new number by the original number
649 - 950 = -301
-301 ÷ 950 = -0.31684210526315787
-0.31684210526315787 x 100 = -31.68%