64.06% is the change from 128 to 210
Calculation steps:
[( 210 - 128 ) ÷ 128] x 100 = 64.06%
Formula
Percentage change = [(210 - 128) / 128] x 100
Subtract the new number by the original number
210 - 128 = 82
82 ÷ 128 = 0.640625
0.640625 x 100 = 64.06%