-3.1% is the change from 935 to 906
Calculation steps:
[( 906 - 935 ) ÷ 935] x 100 = -3.1%
Formula
Percentage change = [(906 - 935) / 935] x 100
Subtract the new number by the original number
906 - 935 = -29
-29 ÷ 935 = -0.031016042780748664
-0.031016042780748664 x 100 = -3.1%