-70.57% is the change from 581 to 171
Calculation steps:
[( 171 - 581 ) ÷ 581] x 100 = -70.57%
Formula
Percentage change = [(171 - 581) / 581] x 100
Subtract the new number by the original number
171 - 581 = -410
-410 ÷ 581 = -0.7056798623063684
-0.7056798623063684 x 100 = -70.57%