-31.58% is the change from 950 to 650
Calculation steps:
[( 650 - 950 ) ÷ 950] x 100 = -31.58%
Formula
Percentage change = [(650 - 950) / 950] x 100
Subtract the new number by the original number
650 - 950 = -300
-300 ÷ 950 = -0.3157894736842105
-0.3157894736842105 x 100 = -31.58%