-96.83% is the change from 505 to 16
Calculation steps:
[( 16 - 505 ) ÷ 505] x 100 = -96.83%
Formula
Percentage change = [(16 - 505) / 505] x 100
Subtract the new number by the original number
16 - 505 = -489
-489 ÷ 505 = -0.9683168316831683
-0.9683168316831683 x 100 = -96.83%