66.99% is the change from 206 to 344
Calculation steps:
[( 344 - 206 ) ÷ 206] x 100 = 66.99%
Formula
Percentage change = [(344 - 206) / 206] x 100
Subtract the new number by the original number
344 - 206 = 138
138 ÷ 206 = 0.6699029126213593
0.6699029126213593 x 100 = 66.99%