54.29% is the change from 210 to 324
Calculation steps:
[( 324 - 210 ) ÷ 210] x 100 = 54.29%
Formula
Percentage change = [(324 - 210) / 210] x 100
Subtract the new number by the original number
324 - 210 = 114
114 ÷ 210 = 0.5428571428571428
0.5428571428571428 x 100 = 54.29%