-92.1% is the change from 291 to 23
Calculation steps:
[( 23 - 291 ) ÷ 291] x 100 = -92.1%
Formula
Percentage change = [(23 - 291) / 291] x 100
Subtract the new number by the original number
23 - 291 = -268
-268 ÷ 291 = -0.9209621993127147
-0.9209621993127147 x 100 = -92.1%