-42.16% is the change from 899 to 520
Calculation steps:
[( 520 - 899 ) ÷ 899] x 100 = -42.16%
Formula
Percentage change = [(520 - 899) / 899] x 100
Subtract the new number by the original number
520 - 899 = -379
-379 ÷ 899 = -0.42157953281423804
-0.42157953281423804 x 100 = -42.16%