-95.43% is the change from 328 to 15
Calculation steps:
[( 15 - 328 ) ÷ 328] x 100 = -95.43%
Formula
Percentage change = [(15 - 328) / 328] x 100
Subtract the new number by the original number
15 - 328 = -313
-313 ÷ 328 = -0.9542682926829268
-0.9542682926829268 x 100 = -95.43%