-46.08% is the change from 319 to 172
Calculation steps:
[( 172 - 319 ) ÷ 319] x 100 = -46.08%
Formula
Percentage change = [(172 - 319) / 319] x 100
Subtract the new number by the original number
172 - 319 = -147
-147 ÷ 319 = -0.4608150470219436
-0.4608150470219436 x 100 = -46.08%