-97.07% is the change from 921 to 27
Calculation steps:
[( 27 - 921 ) ÷ 921] x 100 = -97.07%
Formula
Percentage change = [(27 - 921) / 921] x 100
Subtract the new number by the original number
27 - 921 = -894
-894 ÷ 921 = -0.9706840390879479
-0.9706840390879479 x 100 = -97.07%