2450% is the change from 4 to 102
Calculation steps:
[( 102 - 4 ) ÷ 4] x 100 = 2450%
Formula
Percentage change = [(102 - 4) / 4] x 100
Subtract the new number by the original number
102 - 4 = 98
98 ÷ 4 = 24.5
24.5 x 100 = 2450%
Example