1800% is the change from 13 to 247
Calculation steps:
[( 247 - 13 ) ÷ 13] x 100 = 1800%
Formula
Percentage change = [(247 - 13) / 13] x 100
Subtract the new number by the original number
247 - 13 = 234
234 ÷ 13 = 18
18 x 100 = 1800%
Example