-2.81% is the change from 998 to 970
Calculation steps:
[( 970 - 998 ) ÷ 998] x 100 = -2.81%
Formula
Percentage change = [(970 - 998) / 998] x 100
Subtract the new number by the original number
970 - 998 = -28
-28 ÷ 998 = -0.028056112224448898
-0.028056112224448898 x 100 = -2.81%