200% is the change from 17 to 51
Calculation steps:
[( 51 - 17 ) ÷ 17] x 100 = 200%
Formula
Percentage change = [(51 - 17) / 17] x 100
Subtract the new number by the original number
51 - 17 = 34
34 ÷ 17 = 2
2 x 100 = 200%
Example