600% is the change from 45 to 315
Calculation steps:
[( 315 - 45 ) ÷ 45] x 100 = 600%
Formula
Percentage change = [(315 - 45) / 45] x 100
Subtract the new number by the original number
315 - 45 = 270
270 ÷ 45 = 6
6 x 100 = 600%
Example