-40.91% is the change from 880 to 520
Calculation steps:
[( 520 - 880 ) ÷ 880] x 100 = -40.91%
Formula
Percentage change = [(520 - 880) / 880] x 100
Subtract the new number by the original number
520 - 880 = -360
-360 ÷ 880 = -0.4090909090909091
-0.4090909090909091 x 100 = -40.91%