400% is the change from 14 to 70
Calculation steps:
[( 70 - 14 ) ÷ 14] x 100 = 400%
Formula
Percentage change = [(70 - 14) / 14] x 100
Subtract the new number by the original number
70 - 14 = 56
56 ÷ 14 = 4
4 x 100 = 400%
Example