1634.78% is the change from 23 to 399
Calculation steps:
[( 399 - 23 ) ÷ 23] x 100 = 1634.78%
Formula
Percentage change = [(399 - 23) / 23] x 100
Subtract the new number by the original number
399 - 23 = 376
376 ÷ 23 = 16.347826086956523
16.347826086956523 x 100 = 1634.78%