-89.59% is the change from 221 to 23
Calculation steps:
[( 23 - 221 ) ÷ 221] x 100 = -89.59%
Formula
Percentage change = [(23 - 221) / 221] x 100
Subtract the new number by the original number
23 - 221 = -198
-198 ÷ 221 = -0.8959276018099548
-0.8959276018099548 x 100 = -89.59%