-43.61% is the change from 305 to 172
Calculation steps:
[( 172 - 305 ) ÷ 305] x 100 = -43.61%
Formula
Percentage change = [(172 - 305) / 305] x 100
Subtract the new number by the original number
172 - 305 = -133
-133 ÷ 305 = -0.4360655737704918
-0.4360655737704918 x 100 = -43.61%