-3.98% is the change from 979 to 940
Calculation steps:
[( 940 - 979 ) ÷ 979] x 100 = -3.98%
Formula
Percentage change = [(940 - 979) / 979] x 100
Subtract the new number by the original number
940 - 979 = -39
-39 ÷ 979 = -0.03983656792645557
-0.03983656792645557 x 100 = -3.98%