27.88% is the change from 538 to 688
Calculation steps:
[( 688 - 538 ) ÷ 538] x 100 = 27.88%
Formula
Percentage change = [(688 - 538) / 538] x 100
Subtract the new number by the original number
688 - 538 = 150
150 ÷ 538 = 0.2788104089219331
0.2788104089219331 x 100 = 27.88%