34.58% is the change from 668 to 899
Calculation steps:
[( 899 - 668 ) ÷ 668] x 100 = 34.58%
Formula
Percentage change = [(899 - 668) / 668] x 100
Subtract the new number by the original number
899 - 668 = 231
231 ÷ 668 = 0.3458083832335329
0.3458083832335329 x 100 = 34.58%