300% is the change from 130 to 520
Calculation steps:
[( 520 - 130 ) ÷ 130] x 100 = 300%
Formula
Percentage change = [(520 - 130) / 130] x 100
Subtract the new number by the original number
520 - 130 = 390
390 ÷ 130 = 3
3 x 100 = 300%
Example