-97.02% is the change from 939 to 28
Calculation steps:
[( 28 - 939 ) ÷ 939] x 100 = -97.02%
Formula
Percentage change = [(28 - 939) / 939] x 100
Subtract the new number by the original number
28 - 939 = -911
-911 ÷ 939 = -0.9701810436634718
-0.9701810436634718 x 100 = -97.02%