-67.77% is the change from 996 to 321
Calculation steps:
[( 321 - 996 ) ÷ 996] x 100 = -67.77%
Formula
Percentage change = [(321 - 996) / 996] x 100
Subtract the new number by the original number
321 - 996 = -675
-675 ÷ 996 = -0.677710843373494
-0.677710843373494 x 100 = -67.77%