1238.1% is the change from 21 to 281
Calculation steps:
[( 281 - 21 ) ÷ 21] x 100 = 1238.1%
Formula
Percentage change = [(281 - 21) / 21] x 100
Subtract the new number by the original number
281 - 21 = 260
260 ÷ 21 = 12.380952380952381
12.380952380952381 x 100 = 1238.1%