83.87% is the change from 279 to 513
Calculation steps:
[( 513 - 279 ) ÷ 279] x 100 = 83.87%
Formula
Percentage change = [(513 - 279) / 279] x 100
Subtract the new number by the original number
513 - 279 = 234
234 ÷ 279 = 0.8387096774193549
0.8387096774193549 x 100 = 83.87%