-28.97% is the change from 939 to 667
Calculation steps:
[( 667 - 939 ) ÷ 939] x 100 = -28.97%
Formula
Percentage change = [(667 - 939) / 939] x 100
Subtract the new number by the original number
667 - 939 = -272
-272 ÷ 939 = -0.2896698615548456
-0.2896698615548456 x 100 = -28.97%