-54.81% is the change from 520 to 235
Calculation steps:
[( 235 - 520 ) ÷ 520] x 100 = -54.81%
Formula
Percentage change = [(235 - 520) / 520] x 100
Subtract the new number by the original number
235 - 520 = -285
-285 ÷ 520 = -0.5480769230769231
-0.5480769230769231 x 100 = -54.81%