2314.29% is the change from 21 to 507
Calculation steps:
[( 507 - 21 ) ÷ 21] x 100 = 2314.29%
Formula
Percentage change = [(507 - 21) / 21] x 100
Subtract the new number by the original number
507 - 21 = 486
486 ÷ 21 = 23.142857142857142
23.142857142857142 x 100 = 2314.29%