-4.98% is the change from 864 to 821
Calculation steps:
[( 821 - 864 ) ÷ 864] x 100 = -4.98%
Formula
Percentage change = [(821 - 864) / 864] x 100
Subtract the new number by the original number
821 - 864 = -43
-43 ÷ 864 = -0.04976851851851852
-0.04976851851851852 x 100 = -4.98%