1085.71% is the change from 21 to 249
Calculation steps:
[( 249 - 21 ) ÷ 21] x 100 = 1085.71%
Formula
Percentage change = [(249 - 21) / 21] x 100
Subtract the new number by the original number
249 - 21 = 228
228 ÷ 21 = 10.857142857142858
10.857142857142858 x 100 = 1085.71%