-36.83% is the change from 505 to 319
Calculation steps:
[( 319 - 505 ) ÷ 505] x 100 = -36.83%
Formula
Percentage change = [(319 - 505) / 505] x 100
Subtract the new number by the original number
319 - 505 = -186
-186 ÷ 505 = -0.3683168316831683
-0.3683168316831683 x 100 = -36.83%