-46.45% is the change from 521 to 279
Calculation steps:
[( 279 - 521 ) ÷ 521] x 100 = -46.45%
Formula
Percentage change = [(279 - 521) / 521] x 100
Subtract the new number by the original number
279 - 521 = -242
-242 ÷ 521 = -0.46449136276391556
-0.46449136276391556 x 100 = -46.45%