-0.51% is the change from 980 to 975
Calculation steps:
[( 975 - 980 ) ÷ 980] x 100 = -0.51%
Formula
Percentage change = [(975 - 980) / 980] x 100
Subtract the new number by the original number
975 - 980 = -5
-5 ÷ 980 = -0.00510204081632653
-0.00510204081632653 x 100 = -0.51%