16500% is the change from 4 to 664
Calculation steps:
[( 664 - 4 ) ÷ 4] x 100 = 16500%
Formula
Percentage change = [(664 - 4) / 4] x 100
Subtract the new number by the original number
664 - 4 = 660
660 ÷ 4 = 165
165 x 100 = 16500%
Example