-73.37% is the change from 323 to 86
Calculation steps:
[( 86 - 323 ) ÷ 323] x 100 = -73.37%
Formula
Percentage change = [(86 - 323) / 323] x 100
Subtract the new number by the original number
86 - 323 = -237
-237 ÷ 323 = -0.7337461300309598
-0.7337461300309598 x 100 = -73.37%