-3.45% is the change from 899 to 868
Calculation steps:
[( 868 - 899 ) ÷ 899] x 100 = -3.45%
Formula
Percentage change = [(868 - 899) / 899] x 100
Subtract the new number by the original number
868 - 899 = -31
-31 ÷ 899 = -0.034482758620689655
-0.034482758620689655 x 100 = -3.45%