-9.18% is the change from 904 to 821
Calculation steps:
[( 821 - 904 ) ÷ 904] x 100 = -9.18%
Formula
Percentage change = [(821 - 904) / 904] x 100
Subtract the new number by the original number
821 - 904 = -83
-83 ÷ 904 = -0.0918141592920354
-0.0918141592920354 x 100 = -9.18%