-0.81% is the change from 987 to 979
Calculation steps:
[( 979 - 987 ) ÷ 987] x 100 = -0.81%
Formula
Percentage change = [(979 - 987) / 987] x 100
Subtract the new number by the original number
979 - 987 = -8
-8 ÷ 987 = -0.008105369807497468
-0.008105369807497468 x 100 = -0.81%