-15.79% is the change from 323 to 272
Calculation steps:
[( 272 - 323 ) ÷ 323] x 100 = -15.79%
Formula
Percentage change = [(272 - 323) / 323] x 100
Subtract the new number by the original number
272 - 323 = -51
-51 ÷ 323 = -0.15789473684210525
-0.15789473684210525 x 100 = -15.79%