21.18% is the change from 288 to 349
Calculation steps:
[( 349 - 288 ) ÷ 288] x 100 = 21.18%
Formula
Percentage change = [(349 - 288) / 288] x 100
Subtract the new number by the original number
349 - 288 = 61
61 ÷ 288 = 0.21180555555555555
0.21180555555555555 x 100 = 21.18%