-2.86% is the change from 978 to 950
Calculation steps:
[( 950 - 978 ) ÷ 978] x 100 = -2.86%
Formula
Percentage change = [(950 - 978) / 978] x 100
Subtract the new number by the original number
950 - 978 = -28
-28 ÷ 978 = -0.028629856850715747
-0.028629856850715747 x 100 = -2.86%