1700% is the change from 4 to 72
Calculation steps:
[( 72 - 4 ) ÷ 4] x 100 = 1700%
Formula
Percentage change = [(72 - 4) / 4] x 100
Subtract the new number by the original number
72 - 4 = 68
68 ÷ 4 = 17
17 x 100 = 1700%
Example