-6.17% is the change from 875 to 821
Calculation steps:
[( 821 - 875 ) ÷ 875] x 100 = -6.17%
Formula
Percentage change = [(821 - 875) / 875] x 100
Subtract the new number by the original number
821 - 875 = -54
-54 ÷ 875 = -0.061714285714285715
-0.061714285714285715 x 100 = -6.17%