1157.14% is the change from 21 to 264
Calculation steps:
[( 264 - 21 ) ÷ 21] x 100 = 1157.14%
Formula
Percentage change = [(264 - 21) / 21] x 100
Subtract the new number by the original number
264 - 21 = 243
243 ÷ 21 = 11.571428571428571
11.571428571428571 x 100 = 1157.14%