-93.54% is the change from 325 to 21
Calculation steps:
[( 21 - 325 ) ÷ 325] x 100 = -93.54%
Formula
Percentage change = [(21 - 325) / 325] x 100
Subtract the new number by the original number
21 - 325 = -304
-304 ÷ 325 = -0.9353846153846154
-0.9353846153846154 x 100 = -93.54%