-2.88% is the change from 939 to 912
Calculation steps:
[( 912 - 939 ) ÷ 939] x 100 = -2.88%
Formula
Percentage change = [(912 - 939) / 939] x 100
Subtract the new number by the original number
912 - 939 = -27
-27 ÷ 939 = -0.02875399361022364
-0.02875399361022364 x 100 = -2.88%