-17.74% is the change from 186 to 153
Calculation steps:
[( 153 - 186 ) ÷ 186] x 100 = -17.74%
Formula
Percentage change = [(153 - 186) / 186] x 100
Subtract the new number by the original number
153 - 186 = -33
-33 ÷ 186 = -0.1774193548387097
-0.1774193548387097 x 100 = -17.74%