4280.95% is the change from 21 to 920
Calculation steps:
[( 920 - 21 ) ÷ 21] x 100 = 4280.95%
Formula
Percentage change = [(920 - 21) / 21] x 100
Subtract the new number by the original number
920 - 21 = 899
899 ÷ 21 = 42.80952380952381
42.80952380952381 x 100 = 4280.95%