-3.02% is the change from 960 to 931
Calculation steps:
[( 931 - 960 ) ÷ 960] x 100 = -3.02%
Formula
Percentage change = [(931 - 960) / 960] x 100
Subtract the new number by the original number
931 - 960 = -29
-29 ÷ 960 = -0.030208333333333334
-0.030208333333333334 x 100 = -3.02%