78.82% is the change from 288 to 515
Calculation steps:
[( 515 - 288 ) ÷ 288] x 100 = 78.82%
Formula
Percentage change = [(515 - 288) / 288] x 100
Subtract the new number by the original number
515 - 288 = 227
227 ÷ 288 = 0.7881944444444444
0.7881944444444444 x 100 = 78.82%