1871.43% is the change from 21 to 414
Calculation steps:
[( 414 - 21 ) ÷ 21] x 100 = 1871.43%
Formula
Percentage change = [(414 - 21) / 21] x 100
Subtract the new number by the original number
414 - 21 = 393
393 ÷ 21 = 18.714285714285715
18.714285714285715 x 100 = 1871.43%