18.57% is the change from 210 to 249
Calculation steps:
[( 249 - 210 ) ÷ 210] x 100 = 18.57%
Formula
Percentage change = [(249 - 210) / 210] x 100
Subtract the new number by the original number
249 - 210 = 39
39 ÷ 210 = 0.18571428571428572
0.18571428571428572 x 100 = 18.57%