-1.1% is the change from 998 to 987
Calculation steps:
[( 987 - 998 ) ÷ 998] x 100 = -1.1%
Formula
Percentage change = [(987 - 998) / 998] x 100
Subtract the new number by the original number
987 - 998 = -11
-11 ÷ 998 = -0.011022044088176353
-0.011022044088176353 x 100 = -1.1%