-41.13% is the change from 868 to 511
Calculation steps:
[( 511 - 868 ) ÷ 868] x 100 = -41.13%
Formula
Percentage change = [(511 - 868) / 868] x 100
Subtract the new number by the original number
511 - 868 = -357
-357 ÷ 868 = -0.4112903225806452
-0.4112903225806452 x 100 = -41.13%