1145% is the change from 20 to 249
Calculation steps:
[( 249 - 20 ) ÷ 20] x 100 = 1145%
Formula
Percentage change = [(249 - 20) / 20] x 100
Subtract the new number by the original number
249 - 20 = 229
229 ÷ 20 = 11.45
11.45 x 100 = 1145%
Example