-70.77% is the change from 585 to 171
Calculation steps:
[( 171 - 585 ) ÷ 585] x 100 = -70.77%
Formula
Percentage change = [(171 - 585) / 585] x 100
Subtract the new number by the original number
171 - 585 = -414
-414 ÷ 585 = -0.7076923076923077
-0.7076923076923077 x 100 = -70.77%