-70.7% is the change from 587 to 172
Calculation steps:
[( 172 - 587 ) ÷ 587] x 100 = -70.7%
Formula
Percentage change = [(172 - 587) / 587] x 100
Subtract the new number by the original number
172 - 587 = -415
-415 ÷ 587 = -0.706984667802385
-0.706984667802385 x 100 = -70.7%