69.79% is the change from 235 to 399
Calculation steps:
[( 399 - 235 ) ÷ 235] x 100 = 69.79%
Formula
Percentage change = [(399 - 235) / 235] x 100
Subtract the new number by the original number
399 - 235 = 164
164 ÷ 235 = 0.6978723404255319
0.6978723404255319 x 100 = 69.79%