66.18% is the change from 340 to 565
Calculation steps:
[( 565 - 340 ) ÷ 340] x 100 = 66.18%
Formula
Percentage change = [(565 - 340) / 340] x 100
Subtract the new number by the original number
565 - 340 = 225
225 ÷ 340 = 0.6617647058823529
0.6617647058823529 x 100 = 66.18%