2000% is the change from 17 to 357
Calculation steps:
[( 357 - 17 ) ÷ 17] x 100 = 2000%
Formula
Percentage change = [(357 - 17) / 17] x 100
Subtract the new number by the original number
357 - 17 = 340
340 ÷ 17 = 20
20 x 100 = 2000%
Example