-2.92% is the change from 959 to 931
Calculation steps:
[( 931 - 959 ) ÷ 959] x 100 = -2.92%
Formula
Percentage change = [(931 - 959) / 959] x 100
Subtract the new number by the original number
931 - 959 = -28
-28 ÷ 959 = -0.029197080291970802
-0.029197080291970802 x 100 = -2.92%