2100% is the change from 21 to 462
Calculation steps:
[( 462 - 21 ) ÷ 21] x 100 = 2100%
Formula
Percentage change = [(462 - 21) / 21] x 100
Subtract the new number by the original number
462 - 21 = 441
441 ÷ 21 = 21
21 x 100 = 2100%
Example