25% is the change from 168 to 210
Calculation steps:
[( 210 - 168 ) ÷ 168] x 100 = 25%
Formula
Percentage change = [(210 - 168) / 168] x 100
Subtract the new number by the original number
210 - 168 = 42
42 ÷ 168 = 0.25
0.25 x 100 = 25%
Example