-42.99% is the change from 321 to 183
Calculation steps:
[( 183 - 321 ) ÷ 321] x 100 = -42.99%
Formula
Percentage change = [(183 - 321) / 321] x 100
Subtract the new number by the original number
183 - 321 = -138
-138 ÷ 321 = -0.42990654205607476
-0.42990654205607476 x 100 = -42.99%