4471.43% is the change from 21 to 960
Calculation steps:
[( 960 - 21 ) ÷ 21] x 100 = 4471.43%
Formula
Percentage change = [(960 - 21) / 21] x 100
Subtract the new number by the original number
960 - 21 = 939
939 ÷ 21 = 44.714285714285715
44.714285714285715 x 100 = 4471.43%