-46.35% is the change from 520 to 279
Calculation steps:
[( 279 - 520 ) ÷ 520] x 100 = -46.35%
Formula
Percentage change = [(279 - 520) / 520] x 100
Subtract the new number by the original number
279 - 520 = -241
-241 ÷ 520 = -0.4634615384615385
-0.4634615384615385 x 100 = -46.35%