-45.61% is the change from 513 to 279
Calculation steps:
[( 279 - 513 ) ÷ 513] x 100 = -45.61%
Formula
Percentage change = [(279 - 513) / 513] x 100
Subtract the new number by the original number
279 - 513 = -234
-234 ÷ 513 = -0.45614035087719296
-0.45614035087719296 x 100 = -45.61%