-55.56% is the change from 387 to 172
Calculation steps:
[( 172 - 387 ) ÷ 387] x 100 = -55.56%
Formula
Percentage change = [(172 - 387) / 387] x 100
Subtract the new number by the original number
172 - 387 = -215
-215 ÷ 387 = -0.5555555555555556
-0.5555555555555556 x 100 = -55.56%