20.49% is the change from 288 to 347
Calculation steps:
[( 347 - 288 ) ÷ 288] x 100 = 20.49%
Formula
Percentage change = [(347 - 288) / 288] x 100
Subtract the new number by the original number
347 - 288 = 59
59 ÷ 288 = 0.2048611111111111
0.2048611111111111 x 100 = 20.49%