27.98% is the change from 168 to 215
Calculation steps:
[( 215 - 168 ) ÷ 168] x 100 = 27.98%
Formula
Percentage change = [(215 - 168) / 168] x 100
Subtract the new number by the original number
215 - 168 = 47
47 ÷ 168 = 0.27976190476190477
0.27976190476190477 x 100 = 27.98%