15900% is the change from 2 to 320
Calculation steps:
[( 320 - 2 ) ÷ 2] x 100 = 15900%
Formula
Percentage change = [(320 - 2) / 2] x 100
Subtract the new number by the original number
320 - 2 = 318
318 ÷ 2 = 159
159 x 100 = 15900%
Example