61.43% is the change from 210 to 339
Calculation steps:
[( 339 - 210 ) ÷ 210] x 100 = 61.43%
Formula
Percentage change = [(339 - 210) / 210] x 100
Subtract the new number by the original number
339 - 210 = 129
129 ÷ 210 = 0.6142857142857143
0.6142857142857143 x 100 = 61.43%