-56.07% is the change from 387 to 170
Calculation steps:
[( 170 - 387 ) ÷ 387] x 100 = -56.07%
Formula
Percentage change = [(170 - 387) / 387] x 100
Subtract the new number by the original number
170 - 387 = -217
-217 ÷ 387 = -0.5607235142118863
-0.5607235142118863 x 100 = -56.07%