2357.14% is the change from 21 to 516
Calculation steps:
[( 516 - 21 ) ÷ 21] x 100 = 2357.14%
Formula
Percentage change = [(516 - 21) / 21] x 100
Subtract the new number by the original number
516 - 21 = 495
495 ÷ 21 = 23.571428571428573
23.571428571428573 x 100 = 2357.14%