9.52% is the change from 210 to 230
Calculation steps:
[( 230 - 210 ) ÷ 210] x 100 = 9.52%
Formula
Percentage change = [(230 - 210) / 210] x 100
Subtract the new number by the original number
230 - 210 = 20
20 ÷ 210 = 0.09523809523809523
0.09523809523809523 x 100 = 9.52%