1185.71% is the change from 21 to 270
Calculation steps:
[( 270 - 21 ) ÷ 21] x 100 = 1185.71%
Formula
Percentage change = [(270 - 21) / 21] x 100
Subtract the new number by the original number
270 - 21 = 249
249 ÷ 21 = 11.857142857142858
11.857142857142858 x 100 = 1185.71%