2690.48% is the change from 21 to 586
Calculation steps:
[( 586 - 21 ) ÷ 21] x 100 = 2690.48%
Formula
Percentage change = [(586 - 21) / 21] x 100
Subtract the new number by the original number
586 - 21 = 565
565 ÷ 21 = 26.904761904761905
26.904761904761905 x 100 = 2690.48%