-25.86% is the change from 321 to 238
Calculation steps:
[( 238 - 321 ) ÷ 321] x 100 = -25.86%
Formula
Percentage change = [(238 - 321) / 321] x 100
Subtract the new number by the original number
238 - 321 = -83
-83 ÷ 321 = -0.2585669781931464
-0.2585669781931464 x 100 = -25.86%