2000% is the change from 16 to 336
Calculation steps:
[( 336 - 16 ) ÷ 16] x 100 = 2000%
Formula
Percentage change = [(336 - 16) / 16] x 100
Subtract the new number by the original number
336 - 16 = 320
320 ÷ 16 = 20
20 x 100 = 2000%
Example