-54.55% is the change from 880 to 400
Calculation steps:
[( 400 - 880 ) ÷ 880] x 100 = -54.55%
Formula
Percentage change = [(400 - 880) / 880] x 100
Subtract the new number by the original number
400 - 880 = -480
-480 ÷ 880 = -0.5454545454545454
-0.5454545454545454 x 100 = -54.55%