2800% is the change from 23 to 667
Calculation steps:
[( 667 - 23 ) ÷ 23] x 100 = 2800%
Formula
Percentage change = [(667 - 23) / 23] x 100
Subtract the new number by the original number
667 - 23 = 644
644 ÷ 23 = 28
28 x 100 = 2800%
Example