-97.12% is the change from 939 to 27
Calculation steps:
[( 27 - 939 ) ÷ 939] x 100 = -97.12%
Formula
Percentage change = [(27 - 939) / 939] x 100
Subtract the new number by the original number
27 - 939 = -912
-912 ÷ 939 = -0.9712460063897763
-0.9712460063897763 x 100 = -97.12%