-52.34% is the change from 321 to 153
Calculation steps:
[( 153 - 321 ) ÷ 321] x 100 = -52.34%
Formula
Percentage change = [(153 - 321) / 321] x 100
Subtract the new number by the original number
153 - 321 = -168
-168 ÷ 321 = -0.5233644859813084
-0.5233644859813084 x 100 = -52.34%