-24.78% is the change from 230 to 173
Calculation steps:
[( 173 - 230 ) ÷ 230] x 100 = -24.78%
Formula
Percentage change = [(173 - 230) / 230] x 100
Subtract the new number by the original number
173 - 230 = -57
-57 ÷ 230 = -0.24782608695652175
-0.24782608695652175 x 100 = -24.78%