21.53% is the change from 288 to 350
Calculation steps:
[( 350 - 288 ) ÷ 288] x 100 = 21.53%
Formula
Percentage change = [(350 - 288) / 288] x 100
Subtract the new number by the original number
350 - 288 = 62
62 ÷ 288 = 0.2152777777777778
0.2152777777777778 x 100 = 21.53%