-0.81% is the change from 988 to 980
Calculation steps:
[( 980 - 988 ) ÷ 988] x 100 = -0.81%
Formula
Percentage change = [(980 - 988) / 988] x 100
Subtract the new number by the original number
980 - 988 = -8
-8 ÷ 988 = -0.008097165991902834
-0.008097165991902834 x 100 = -0.81%