34.68% is the change from 666 to 897
Calculation steps:
[( 897 - 666 ) ÷ 666] x 100 = 34.68%
Formula
Percentage change = [(897 - 666) / 666] x 100
Subtract the new number by the original number
897 - 666 = 231
231 ÷ 666 = 0.34684684684684686
0.34684684684684686 x 100 = 34.68%