1342.86% is the change from 21 to 303
Calculation steps:
[( 303 - 21 ) ÷ 21] x 100 = 1342.86%
Formula
Percentage change = [(303 - 21) / 21] x 100
Subtract the new number by the original number
303 - 21 = 282
282 ÷ 21 = 13.428571428571429
13.428571428571429 x 100 = 1342.86%