-0.92% is the change from 980 to 971
Calculation steps:
[( 971 - 980 ) ÷ 980] x 100 = -0.92%
Formula
Percentage change = [(971 - 980) / 980] x 100
Subtract the new number by the original number
971 - 980 = -9
-9 ÷ 980 = -0.009183673469387756
-0.009183673469387756 x 100 = -0.92%