-0.32% is the change from 950 to 947
Calculation steps:
[( 947 - 950 ) ÷ 950] x 100 = -0.32%
Formula
Percentage change = [(947 - 950) / 950] x 100
Subtract the new number by the original number
947 - 950 = -3
-3 ÷ 950 = -0.003157894736842105
-0.003157894736842105 x 100 = -0.32%