-2.83% is the change from 988 to 960
Calculation steps:
[( 960 - 988 ) ÷ 988] x 100 = -2.83%
Formula
Percentage change = [(960 - 988) / 988] x 100
Subtract the new number by the original number
960 - 988 = -28
-28 ÷ 988 = -0.02834008097165992
-0.02834008097165992 x 100 = -2.83%