-40.79% is the change from 863 to 511
Calculation steps:
[( 511 - 863 ) ÷ 863] x 100 = -40.79%
Formula
Percentage change = [(511 - 863) / 863] x 100
Subtract the new number by the original number
511 - 863 = -352
-352 ÷ 863 = -0.4078794901506373
-0.4078794901506373 x 100 = -40.79%