655.56% is the change from 45 to 340
Calculation steps:
[( 340 - 45 ) ÷ 45] x 100 = 655.56%
Formula
Percentage change = [(340 - 45) / 45] x 100
Subtract the new number by the original number
340 - 45 = 295
295 ÷ 45 = 6.555555555555555
6.555555555555555 x 100 = 655.56%