-65.19% is the change from 520 to 181
Calculation steps:
[( 181 - 520 ) ÷ 520] x 100 = -65.19%
Formula
Percentage change = [(181 - 520) / 520] x 100
Subtract the new number by the original number
181 - 520 = -339
-339 ÷ 520 = -0.6519230769230769
-0.6519230769230769 x 100 = -65.19%