-97.31% is the change from 520 to 14
Calculation steps:
[( 14 - 520 ) ÷ 520] x 100 = -97.31%
Formula
Percentage change = [(14 - 520) / 520] x 100
Subtract the new number by the original number
14 - 520 = -506
-506 ÷ 520 = -0.9730769230769231
-0.9730769230769231 x 100 = -97.31%