4571.43% is the change from 21 to 981
Calculation steps:
[( 981 - 21 ) ÷ 21] x 100 = 4571.43%
Formula
Percentage change = [(981 - 21) / 21] x 100
Subtract the new number by the original number
981 - 21 = 960
960 ÷ 21 = 45.714285714285715
45.714285714285715 x 100 = 4571.43%