-17.17% is the change from 233 to 193
Calculation steps:
[( 193 - 233 ) ÷ 233] x 100 = -17.17%
Formula
Percentage change = [(193 - 233) / 233] x 100
Subtract the new number by the original number
193 - 233 = -40
-40 ÷ 233 = -0.17167381974248927
-0.17167381974248927 x 100 = -17.17%