-69.23% is the change from 520 to 160
Calculation steps:
[( 160 - 520 ) ÷ 520] x 100 = -69.23%
Formula
Percentage change = [(160 - 520) / 520] x 100
Subtract the new number by the original number
160 - 520 = -360
-360 ÷ 520 = -0.6923076923076923
-0.6923076923076923 x 100 = -69.23%