-54.4% is the change from 875 to 399
Calculation steps:
[( 399 - 875 ) ÷ 875] x 100 = -54.4%
Formula
Percentage change = [(399 - 875) / 875] x 100
Subtract the new number by the original number
399 - 875 = -476
-476 ÷ 875 = -0.544
-0.544 x 100 = -54.4%