1800% is the change from 4 to 76
Calculation steps:
[( 76 - 4 ) ÷ 4] x 100 = 1800%
Formula
Percentage change = [(76 - 4) / 4] x 100
Subtract the new number by the original number
76 - 4 = 72
72 ÷ 4 = 18
18 x 100 = 1800%
Example