7.14% is the change from 210 to 225
Calculation steps:
[( 225 - 210 ) ÷ 210] x 100 = 7.14%
Formula
Percentage change = [(225 - 210) / 210] x 100
Subtract the new number by the original number
225 - 210 = 15
15 ÷ 210 = 0.07142857142857142
0.07142857142857142 x 100 = 7.14%