-40.32% is the change from 816 to 487
Calculation steps:
[( 487 - 816 ) ÷ 816] x 100 = -40.32%
Formula
Percentage change = [(487 - 816) / 816] x 100
Subtract the new number by the original number
487 - 816 = -329
-329 ÷ 816 = -0.40318627450980393
-0.40318627450980393 x 100 = -40.32%