2076.19% is the change from 21 to 457
Calculation steps:
[( 457 - 21 ) ÷ 21] x 100 = 2076.19%
Formula
Percentage change = [(457 - 21) / 21] x 100
Subtract the new number by the original number
457 - 21 = 436
436 ÷ 21 = 20.761904761904763
20.761904761904763 x 100 = 2076.19%