-93.33% is the change from 345 to 23
Calculation steps:
[( 23 - 345 ) ÷ 345] x 100 = -93.33%
Formula
Percentage change = [(23 - 345) / 345] x 100
Subtract the new number by the original number
23 - 345 = -322
-322 ÷ 345 = -0.9333333333333333
-0.9333333333333333 x 100 = -93.33%