-41.01% is the change from 868 to 512
Calculation steps:
[( 512 - 868 ) ÷ 868] x 100 = -41.01%
Formula
Percentage change = [(512 - 868) / 868] x 100
Subtract the new number by the original number
512 - 868 = -356
-356 ÷ 868 = -0.41013824884792627
-0.41013824884792627 x 100 = -41.01%