-3.86% is the change from 854 to 821
Calculation steps:
[( 821 - 854 ) ÷ 854] x 100 = -3.86%
Formula
Percentage change = [(821 - 854) / 854] x 100
Subtract the new number by the original number
821 - 854 = -33
-33 ÷ 854 = -0.03864168618266979
-0.03864168618266979 x 100 = -3.86%