300% is the change from 4 to 16
Calculation steps:
[( 16 - 4 ) ÷ 4] x 100 = 300%
Formula
Percentage change = [(16 - 4) / 4] x 100
Subtract the new number by the original number
16 - 4 = 12
12 ÷ 4 = 3
3 x 100 = 300%
Example