-75.91% is the change from 328 to 79
Calculation steps:
[( 79 - 328 ) ÷ 328] x 100 = -75.91%
Formula
Percentage change = [(79 - 328) / 328] x 100
Subtract the new number by the original number
79 - 328 = -249
-249 ÷ 328 = -0.7591463414634146
-0.7591463414634146 x 100 = -75.91%