1800% is the change from 29 to 551
Calculation steps:
[( 551 - 29 ) ÷ 29] x 100 = 1800%
Formula
Percentage change = [(551 - 29) / 29] x 100
Subtract the new number by the original number
551 - 29 = 522
522 ÷ 29 = 18
18 x 100 = 1800%
Example