70.31% is the change from 128 to 218
Calculation steps:
[( 218 - 128 ) ÷ 128] x 100 = 70.31%
Formula
Percentage change = [(218 - 128) / 128] x 100
Subtract the new number by the original number
218 - 128 = 90
90 ÷ 128 = 0.703125
0.703125 x 100 = 70.31%