-40.32% is the change from 863 to 515
Calculation steps:
[( 515 - 863 ) ÷ 863] x 100 = -40.32%
Formula
Percentage change = [(515 - 863) / 863] x 100
Subtract the new number by the original number
515 - 863 = -348
-348 ÷ 863 = -0.40324449594438005
-0.40324449594438005 x 100 = -40.32%