-4.01% is the change from 947 to 909
Calculation steps:
[( 909 - 947 ) ÷ 947] x 100 = -4.01%
Formula
Percentage change = [(909 - 947) / 947] x 100
Subtract the new number by the original number
909 - 947 = -38
-38 ÷ 947 = -0.04012671594508976
-0.04012671594508976 x 100 = -4.01%