300% is the change from 140 to 560
Calculation steps:
[( 560 - 140 ) ÷ 140] x 100 = 300%
Formula
Percentage change = [(560 - 140) / 140] x 100
Subtract the new number by the original number
560 - 140 = 420
420 ÷ 140 = 3
3 x 100 = 300%
Example