1850% is the change from 4 to 78
Calculation steps:
[( 78 - 4 ) ÷ 4] x 100 = 1850%
Formula
Percentage change = [(78 - 4) / 4] x 100
Subtract the new number by the original number
78 - 4 = 74
74 ÷ 4 = 18.5
18.5 x 100 = 1850%
Example