-2.23% is the change from 988 to 966
Calculation steps:
[( 966 - 988 ) ÷ 988] x 100 = -2.23%
Formula
Percentage change = [(966 - 988) / 988] x 100
Subtract the new number by the original number
966 - 988 = -22
-22 ÷ 988 = -0.022267206477732792
-0.022267206477732792 x 100 = -2.23%