29.41% is the change from 68 to 88
Calculation steps:
[( 88 - 68 ) ÷ 68] x 100 = 29.41%
Formula
Percentage change = [(88 - 68) / 68] x 100
Subtract the new number by the original number
88 - 68 = 20
20 ÷ 68 = 0.29411764705882354
0.29411764705882354 x 100 = 29.41%