-11.4% is the change from 193 to 171
Calculation steps:
[( 171 - 193 ) ÷ 193] x 100 = -11.4%
Formula
Percentage change = [(171 - 193) / 193] x 100
Subtract the new number by the original number
171 - 193 = -22
-22 ÷ 193 = -0.11398963730569948
-0.11398963730569948 x 100 = -11.4%