-78.02% is the change from 323 to 71
Calculation steps:
[( 71 - 323 ) ÷ 323] x 100 = -78.02%
Formula
Percentage change = [(71 - 323) / 323] x 100
Subtract the new number by the original number
71 - 323 = -252
-252 ÷ 323 = -0.7801857585139319
-0.7801857585139319 x 100 = -78.02%