17150% is the change from 2 to 345
Calculation steps:
[( 345 - 2 ) ÷ 2] x 100 = 17150%
Formula
Percentage change = [(345 - 2) / 2] x 100
Subtract the new number by the original number
345 - 2 = 343
343 ÷ 2 = 171.5
171.5 x 100 = 17150%
Example