1814.29% is the change from 21 to 402
Calculation steps:
[( 402 - 21 ) ÷ 21] x 100 = 1814.29%
Formula
Percentage change = [(402 - 21) / 21] x 100
Subtract the new number by the original number
402 - 21 = 381
381 ÷ 21 = 18.142857142857142
18.142857142857142 x 100 = 1814.29%