-28.64% is the change from 447 to 319
Calculation steps:
[( 319 - 447 ) ÷ 447] x 100 = -28.64%
Formula
Percentage change = [(319 - 447) / 447] x 100
Subtract the new number by the original number
319 - 447 = -128
-128 ÷ 447 = -0.28635346756152125
-0.28635346756152125 x 100 = -28.64%