-1.4% is the change from 931 to 918
Calculation steps:
[( 918 - 931 ) ÷ 931] x 100 = -1.4%
Formula
Percentage change = [(918 - 931) / 931] x 100
Subtract the new number by the original number
918 - 931 = -13
-13 ÷ 931 = -0.013963480128893663
-0.013963480128893663 x 100 = -1.4%