-54.95% is the change from 888 to 400
Calculation steps:
[( 400 - 888 ) ÷ 888] x 100 = -54.95%
Formula
Percentage change = [(400 - 888) / 888] x 100
Subtract the new number by the original number
400 - 888 = -488
-488 ÷ 888 = -0.5495495495495496
-0.5495495495495496 x 100 = -54.95%