1155% is the change from 20 to 251
Calculation steps:
[( 251 - 20 ) ÷ 20] x 100 = 1155%
Formula
Percentage change = [(251 - 20) / 20] x 100
Subtract the new number by the original number
251 - 20 = 231
231 ÷ 20 = 11.55
11.55 x 100 = 1155%
Example