71.79% is the change from 234 to 402
Calculation steps:
[( 402 - 234 ) ÷ 234] x 100 = 71.79%
Formula
Percentage change = [(402 - 234) / 234] x 100
Subtract the new number by the original number
402 - 234 = 168
168 ÷ 234 = 0.717948717948718
0.717948717948718 x 100 = 71.79%