76.39% is the change from 288 to 508
Calculation steps:
[( 508 - 288 ) ÷ 288] x 100 = 76.39%
Formula
Percentage change = [(508 - 288) / 288] x 100
Subtract the new number by the original number
508 - 288 = 220
220 ÷ 288 = 0.7638888888888888
0.7638888888888888 x 100 = 76.39%