-67% is the change from 994 to 328
Calculation steps:
[( 328 - 994 ) ÷ 994] x 100 = -67%
Formula
Percentage change = [(328 - 994) / 994] x 100
Subtract the new number by the original number
328 - 994 = -666
-666 ÷ 994 = -0.670020120724346
-0.670020120724346 x 100 = -67%