-91.54% is the change from 319 to 27
Calculation steps:
[( 27 - 319 ) ÷ 319] x 100 = -91.54%
Formula
Percentage change = [(27 - 319) / 319] x 100
Subtract the new number by the original number
27 - 319 = -292
-292 ÷ 319 = -0.9153605015673981
-0.9153605015673981 x 100 = -91.54%