-70.09% is the change from 321 to 96
Calculation steps:
[( 96 - 321 ) ÷ 321] x 100 = -70.09%
Formula
Percentage change = [(96 - 321) / 321] x 100
Subtract the new number by the original number
96 - 321 = -225
-225 ÷ 321 = -0.7009345794392523
-0.7009345794392523 x 100 = -70.09%