200% is the change from 4 to 12
Calculation steps:
[( 12 - 4 ) ÷ 4] x 100 = 200%
Formula
Percentage change = [(12 - 4) / 4] x 100
Subtract the new number by the original number
12 - 4 = 8
8 ÷ 4 = 2
2 x 100 = 200%
Example