2260% is the change from 15 to 354
Calculation steps:
[( 354 - 15 ) ÷ 15] x 100 = 2260%
Formula
Percentage change = [(354 - 15) / 15] x 100
Subtract the new number by the original number
354 - 15 = 339
339 ÷ 15 = 22.6
22.6 x 100 = 2260%
Example