12150% is the change from 4 to 490
Calculation steps:
[( 490 - 4 ) ÷ 4] x 100 = 12150%
Formula
Percentage change = [(490 - 4) / 4] x 100
Subtract the new number by the original number
490 - 4 = 486
486 ÷ 4 = 121.5
121.5 x 100 = 12150%
Example