-15.69% is the change from 204 to 172
Calculation steps:
[( 172 - 204 ) ÷ 204] x 100 = -15.69%
Formula
Percentage change = [(172 - 204) / 204] x 100
Subtract the new number by the original number
172 - 204 = -32
-32 ÷ 204 = -0.1568627450980392
-0.1568627450980392 x 100 = -15.69%