-85.83% is the change from 501 to 71
Calculation steps:
[( 71 - 501 ) ÷ 501] x 100 = -85.83%
Formula
Percentage change = [(71 - 501) / 501] x 100
Subtract the new number by the original number
71 - 501 = -430
-430 ÷ 501 = -0.8582834331337326
-0.8582834331337326 x 100 = -85.83%