-41.12% is the change from 321 to 189
Calculation steps:
[( 189 - 321 ) ÷ 321] x 100 = -41.12%
Formula
Percentage change = [(189 - 321) / 321] x 100
Subtract the new number by the original number
189 - 321 = -132
-132 ÷ 321 = -0.411214953271028
-0.411214953271028 x 100 = -41.12%