-49.42% is the change from 520 to 263
Calculation steps:
[( 263 - 520 ) ÷ 520] x 100 = -49.42%
Formula
Percentage change = [(263 - 520) / 520] x 100
Subtract the new number by the original number
263 - 520 = -257
-257 ÷ 520 = -0.49423076923076925
-0.49423076923076925 x 100 = -49.42%