-93.05% is the change from 331 to 23
Calculation steps:
[( 23 - 331 ) ÷ 331] x 100 = -93.05%
Formula
Percentage change = [(23 - 331) / 331] x 100
Subtract the new number by the original number
23 - 331 = -308
-308 ÷ 331 = -0.9305135951661632
-0.9305135951661632 x 100 = -93.05%