-9.47% is the change from 190 to 172
Calculation steps:
[( 172 - 190 ) ÷ 190] x 100 = -9.47%
Formula
Percentage change = [(172 - 190) / 190] x 100
Subtract the new number by the original number
172 - 190 = -18
-18 ÷ 190 = -0.09473684210526316
-0.09473684210526316 x 100 = -9.47%